User Manual & Tutorials

This is a performance model of the Humidification Dehumidification Desalination Process. Water Heated Humidification dehumidification (WH-HDH) process is used for producing fresh water from saline water at sub-boiling temperatures. This process uses a low-temperature source such as solar energy or waste heat source. Although these heat sources are available with minimal operating costs, an optimum thermal design is required to maximize the water production rate for given heat input. In this work, the main design and performance parameters are investigated for two HDH cycles namely, water-heated and air-heated cycles. First-law based thermal analyses are provided and performance charts are presented by considering assumptions. The system contains the following: 1-Humidifier. 2-Dehumidifier 3-Heat source. Users can control the heat source to get the results of the amount of productivity that should be produced. https://youtu.be/QnpBqNGG_g4 **MatLab-SimuLink should be used to run the model.

Anaerobic digestion is a sequence of processes by which microorganisms break down biodegradable material in the absence of oxygen. The process is used for industrial or domestic purposes to manage waste or to produce fuels. Much of the fermentation used industrially to produce food and drink products, as well as home fermentation, uses anaerobic digestion.As part of an integrated waste management system, anaerobic digestion reduces the emission of landfill gas into the atmosphere. This is a design model, so the user would have to assign the production rate of the gas in order to get the results about the anaerobic digestion design such as volume, height, flow rate, area, load, hourly costs, etc... https://youtu.be/VdAA_3zCpfs

**MatLab-SimuLink should be used to run the model.

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

In this model Linear Fresnel Collector (LFC) has been used as power source for thermal desalination process. LFC is considered as as a brine heater (steam source) for evaporation via direct vapour generation through the solar field. Flash evaporation tank is used to generate the steam from the heated brine from the solar field. The brine content from the flash tank is considered as a blowdown or rejected brine. End Condenser unit is used for condensation process. Seawater or saline water will be pumped directly to the solar field. Free salt steam will be directly goes towards the condenser unit for condensation and fresh water production. Seawater will go first through the condenser unit for the cooling purpose of the extracted steam that coming from the solar field. Nanofilteration unit is added in order to reduce the salinity contents in the intake saline water. It will be considered as a pre-stage before the condenser unit. All auxiliaries will be powered via the main grid. The cycle contains the following: 1-Pump unit. 2-Nanofilteration unit. 3-Condenser. 4-Linear Fresnel Collector (LFC). 5-Flash evaporation Tank. 6-Cost block. The current model is a design model so the user will be able to calculate the following: 1-Design area. 2-Thermal efficiency. 3-Exergy results. 4-Design aspects such as loops and mirrors. 5-Cost analysis. https://youtu.be/uOaHekKuyT4

**MatLab-SimuLink should be used to run the model.

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

This model is about cooling load calculations for a specific refrigeration cycle or for design analysis. Calculation of thermal loads of buildings adapted for cooling in summer and heating in winter is important for the accuracy of the design and the appropriate choice of equipment for the adaptation of air and air handling units in order to meet the requirements of operation, thermal comfort and good distribution of air in the adapted place. User will be able to calculate external and internal loads.

https://youtu.be/P4aOKv8--GE

**MatLab-SimuLink should be used to run the model.

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub All rights reserved.

In linear Fresnel systems, as with parabolic-trough collector systems, solar radiation is concentrated onto a line and can be coupled to steam cycles for electricity generation. These systems have been developed with the aim of attaining a simpler design and at less cost than the parabolic-trough systems. The collectors in a linear Fresnel system are made up of a large number of mirror segments that can individually follow the path of the sun. Unlike parabolic-trough collectors, the absorber tubes in the Fresnel systems are in a fixed position above the mirrors in the centre of the solar field and, therefore, do not move together with the mirrors as they follow the sun. The system can operate with oil, water or molten salts. Current designs use water directly in the receiver tubes at 50 bar pressure and 280oC. The current model is a design model so the user will be able to calculate the following:

1-Design area.

2-Thermal efficiency.

3-Exergy results.

4-Design aspects such as loops and mirrors.

5-Cost analysis.

6-Water working fluid is the main fluid. More working fluids can be added in request.

https://youtu.be/ghwQxxpGWnI

**MatLab-SimuLink should be used to run the model.

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

Flash tanks are designed to have an internal velocity slow enough so that the venting steam will not pick up any water. To accomplish this a large diameter tank is required. The model of Flash Separator uses a smaller diameter tank and a tangential inlet that spins the condensate around creating a low pressure area in the centre of the separator. This allows the condensate to flash into the centre and follow it upwards to the centrally located vent providing clean dry steam. The smaller size and clean dry steam are the reason why current model of Flash Separator is replacing traditional flash tanks. user has to assign only the following parameters: 1-High pressure, bar. 2-Low pressure, bar. 3-Steam flow rate, kg/s. The model will calculate the following: 1-All design aspects (Flash tank diameter, height, Drain, vent, etc). 2-Dryness fraction. 3-Temperature, oC. 4-Enthalpies, kJ/kg. 5-Total mass flow rate, kg/s. 6-Bottom tank flow rate, kg/s. 7-Cost analysis, $/y, $, and $/hr.

https://youtu.be/VO_RgU4tUyg

**MatLab-SimuLink should be used to run the model.

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

Solar Evacuated Tube Collector (ETC) has been used for vapor compression air conditioning cycle. Three types of ETC can be selected. The existence of ETC will help to increase the C.O.P by reducing the compressor power. R410a has been used through the proposed cycle. User can add more working fluids based on his design. The cycle contains: 1-Application load, TR. 2-Evaporator unit. 3-Compressor. 4-Solar ETC. 5-Air cooled condenser unit. 6-Expansion valve. User can select between two types of operation: 1-Vapor Compression Air Conditioning (Conventional Cycle). 2-Vapor Compression Air Conditioning + Solar ETC (Solar VCAC). Dynamic modeling is allowed in order to feel the effect of solar radiation on the process cycle. Solar Radiation Model is included in case of dynamic model version. https://youtu.be/BdyrxAJYQ5A

**MatLab-SimuLink should be used to run the model.

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

Adsorption Water Cooling for Air Conditioning system is presented in this model. SilicaGel material has been used in this model. Silica gel is an amorphous and porous form of silicon dioxide (silica), consisting of an irregular tridimensional framework of alternating silicon and oxygen atoms with nanometer-scale voids and pores. Water has been used as a main refrigerant through the cycle. The cycle contains the following: 1-Evaporator (water). 2-Bed reactor tank (SilicaGel/water). 3-Condenser (water vapor). 5-Expansion valve.

https://youtu.be/IQUOlClhgAk

**MatLab-SimuLink should be used to run the model.

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

This is a direct contact membrane distillation type for desalination process. Watch the tutorial video about how to use it.

This is a performance model for Hemispherical solar still distillation. User can calculate the still performance based on some general parameters. Area and design limits are considered known. User will be able to calculate the following: 1-Temperatures, oC. 2-Heat transfer coeff's. 3-Productivity. 4-Energy equations. 5-Efficiency. 6-Cost analysis.

https://youtu.be/rw6cTuptaOs

**MatLab-SimuLink should be used to run the model.

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

This system is about coupling Hydro power Pelton Turbine systems with Concentrated Solar Gas Engines (Brayton & Stirling) for Standalone applications. The hybrid system contains the following:

1-Hydro Power System.

#Upper tank.

#Lower tank.

#Pelton turbine.

#Centrifugal pump.

2-Concentrated solar gas engines (two models: Brayton and Stirling).

3-Main grid power.

4-Splitter & Control room for load distribution.

#Cost analysis.

#Load distribution. 5-Application load. User should specify the application power and will be able to compare between different technologies based on the cost. https://youtu.be/c2p8lEq5B60 **MatLab-SimuLink (64bit) should be used to run the model. Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

Vapor-compression Air Conditioning system (VCAC), in which the refrigerant (R410a) undergoes phase changes, is one of the many refrigeration cycles and is the most widely used method for air-conditioning of buildings and automobiles. This system is used for cooling and heating purposes. User can switch between summer and winter seasons. In this model, user will be able to run the model dynamically. R410a is used. User can add more working fluids based on his design. The cycle contains:

1-Application load, TR. 2-Evaporator unit. 3-Compressor. 4-Air cooled condenser unit. 5-Expansion valve. 6-Application switch.

https://youtu.be/AYPAF9e3c6o

**MatLab-SimuLink should be used to run the model. Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

The main objective of Ocean Thermal Energy Conversion (OTEC) is to turn the solar energy trapped by the ocean into a usable energy. There is a main two types: Closed cycle, and open cycle. Both can be built on land, and/or offshore platforms. The current system is a closed cycle type which operates the Ammonia (NH3) working fluid. The fluid is evaporated using warm surface seawater temperature. After the vapor drives the turbine, it is condensed by cold seawater temperature. This condensate is pumped back to the evaporator again. The system is built based on design technique of modeling. The system contains the following: 1-Evaporator unit. 2-Turbine. 3-Condenser. 4-Pump. 5-Sea depth calculation. Ammonia (NH3) and seawater prop's are provided in excel sheets and embedded correlations. https://youtu.be/sMpqqR0zjJo

**MatLab-SimuLink should be used to run the model.

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

This is a simulink Lookup table model for Freon R32, R125, and R410a.

R32=CH2F2=Difluoromethane=52.0234

R125=CHF2CF3=Pentafluoroethane=120.02

R410=50%R32 / 50%R125

Solar Adsorption Refrigeration Cycle (SARC) system is similar to vapor compression system in which compressor is replaced by solar heat driven adsorption bed. The adsorption bed is integrated with a flat plate solar collector (FPC/Bed REactor) and contains a porous adsorbent medium (low grade charcoal). This model is a design model for Solar Adsorption Refrigeration Cycle (SARC). Solar flat plate collector is attached to the bed reactor for heat generation process. The cycle contains the following: 1-Evaporator. 2-Bed reactor tank. 3-Solar collector (FPC/water). 4-Condenser. 5-Expansion valve. 6-Activated carbon is used as a bed salt. 7-Methanol CH3OH is used as a main refrigerant.

In this Evacuated tube Solar Collector (ETC-Water working fluid) design model, the system is attached to an intermediate heat exchanger. The system is used to generate hot steam via heat exchanger tank. User will be able to discover the total area based on the assigned thermal load volume. The following parameters can be calculated: 1-Mean plate temperature. 2-ETC total area. 3-Overall losses. 4-Efficiency. 5-exergy analysis. 6-System total thermal power. 7-Total system area, design operating conditions and flow rates. 8-Heat exchangers design. 

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

This system is about coupling Photovoltaic power systems and Horizontal Wind Turbine for Standalone applications. The hybrid system contains the following: 1-Horizontal wind turbine. 2-Photovoltaic with battires. 3-Application. 4-Cost analysis, design and control room for load distribution. User should specify the application power and will be able to compare between different technologies based on the cost.

https://youtu.be/T04sihn-8NY

**MatLab-SimuLink (64bit) should be used to run the model.

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

The cascade refrigeration system is a freezing system that uses two kinds of refrigerants having different boiling points, which run through their own independent freezing cycle and are joined by a heat exchanger. 

https://youtu.be/_9VutORAxoM

**MatLab-SimuLink should be used to run the model.

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

This system is about coupling different Photovoltaic/Diesel Generator systems for Standalone applications. The hybrid system contains the following: 1-Photovoltaic with battires. 2-Diesel engine. 3-Main grid power load. 4-Application. 5-Cost analysis is considered User should specify the application power and will be able to compare between different technologies based on the cost. The system is performed based on design technique of modeling.

**MatLab-SimuLink (64bit) should be used to run the model.

https://youtu.be/8Hy_B3mty30

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

This video is about how to change the operating conditions for solar desalination flashing process by the use of multi effect distillation process. The video will show you how to use signal builder in order to change the input data with respect to time domain.

**MatLab-SimuLink (64bit) should be used to run the model.

https://youtu.be/qbjmZO17HhI

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

Model download link: https://www.redslibrary.com/product-p...

Solar Parabolic Trough Collector (PTC) plant with (Single Flash Cyclone-Evaporation tank) is operated in order to power on the Multi Effect Distillation desalination plant. User can assign the total plant productivity. No power generation developed through this model. It is operated for only desalination. The plant consists of: 1.PTC water steam working fluid. 2.Pumping unit. 3.Flashing tank. 4.MEDpf configuration. 5.Cost analysis. User can assign the following: 1- Top steam temperature, oC. 2- Inlet feed temperature, oC. 3- Last effect temperature, oC. 4- Performance parameters for the pumps and end condenser unit. 5- Feed and brine salinities ratio. https://youtu.be/mDZ1l29Jh1w

**MatLab-SimuLink (64bit) should be used to run the model.

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

A reciprocating compressor or piston compressor is a positive-displacement compressor that uses pistons driven by a crankshaft to deliver gases at high pressure. The intake gas enters the suction manifold, then flows into the compression cylinder where it gets compressed by a piston driven in a reciprocating motion via a crankshaft, and is then discharged. Applications include oil refineries, gas pipelines, chemical plants, natural gas processing plants and refrigeration plants. 12 working gases are available in this model. The model is made for single cylinder (single or double acting) gas compressor. Multi stage reciprocating gas compressor is modeled. User can assign the number of stages and the acting type.

1-Monatomic gases.

2-diatomic gases.

3-Polyatomic gases.

https://youtu.be/LJsPTSjzZMA

**MatLab-SimuLink should be used to run the model.

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

All rights reserved.

This system is about coupling concentrated solar gas engines (Stirling & Brayton) power systems with Horizontal wind turbine (HWT) for Standalone applications. The hybrid system contains the following:

1-Horizontal wind turbine. 2-Concentrated solar gas engines (two models: Brayton and Stirling).

3-Batteries bank. 4-Application. User should specify the application power and will be able to compare between different technologies based on the cost.

 

**MatLab-SimuLink (64bit) should be used to run the model.

https://youtu.be/pRytypoRDOg

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

In this model Solar Organic Rankine Cycle (SORC) by the use of Toluene and Therminol-VP1 heat transfer oil is used for electric power generation and desalination purposes. The desalination part is represented by membrane distillation. Biogas fired boiler is used for sunoff periods. User will calculate all design aspects, energy streams, exergy, cost and thermo-economics. The cycle contains the following:

1-PTC Therminol-VP1. 2-Boiler heat exchanger unit with storage and pump. 3-Turbine unit for power generation.

4-Recuperator for energy recovery. 5-Condenser/cooling heat exchanger unit.

6-Membrane distillation plant (Air Gap configuration). 7-ORC pump. 8-Biogas boiler for sun off periods. 8-Cost analysis block. 9-Performance block.

Note that: For PTC collector the design operating temperature shouldn't exceed above 400oC.

**MatLab-SimuLink should be used to run the model.

https://youtu.be/TGnIv8fAUNk

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

Learn how to change working fluids through the FPC by the use of matlab/simulink lookup tables. In this Flat Plate Solar Collector design model, user will be able to discover the total area based on the assigned thermal load volume. The following paramters can be calculated: 1-Mean plate temperature. 2-FPC total area. 3-Overall losses. 4-Efficiency.

**MatLab-SimuLink should be used to run the model.

https://youtu.be/MKyeenxNuec

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

This is a performance model for solar still distillation by the use of Flat Plate Solar Collector. PCM storage medium is used at the Still bottom. At the same time, heat exchanger coil is used to enhance the still performance. Moreover, the glass cover is cooled down in order to increase the rate of condensation on the glass cover. User can calculate the still performance based on some general parameters. Area and design limits are considered known. User will be able to calculate the following: 1-Temperatures, oC. 2-Heat transfer coeff's. 3-Productivity. 4-Energy equations. 5-Efficiency. In this Flat Plate Solar Collector design model, user will be able to discover the total area based on the assigned thermal load volume. The following paramters can be calculated: 1-Mean plate temperature. 2-FPC total area. 3-Overall losses. 4-Efficiency.

**MatLab-SimuLink should be used to run the model.

https://youtu.be/NSWEZ2rsbNQ

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

This model is concerned about design and modeling of PTC/CST solar thermal power for power generation. Reverse osmosis and main grid are considered the load on the turbine unit. MED/MSF desalination plants will act as a condensation/desalination part through the cycle. The thermal power via solar PTC and CST will be transferred through the boiler heat exchanger unit to power on thermal steam Rankine cycle (power). The plant consists of the following: 1-Solar Molten Salt PTC and or CST. 2-Boiler heat exchanger unit with two storage sections (hot & cold). 3-Pump (Molten Salt). 4-Turbine unit. 5-MSF or MEDpf desalination. 6-Pump (steam). 7-Reverse Osmosis plant. 8-Cost block. 9-Performance block.

**MatLab-SimuLink should be used to run the model.

https://youtu.be/NGwtCVOa3SY

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

This is a performance model for solar still distillation by the use of baffles. User can calculate the still performance based on some general parameters. Area and design limits are considered known. User will be able to calculate the following: 1-Temperatures, oC. 2-Heat transfer coeff's. 3-Productivity. 4-Energy equations. 5-Cost.

**MatLab-SimuLink should be used to run the model.

https://youtu.be/_jspcJzgiP4

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

In this Evacuated tube Solar Collector (ETC) design model with Therminol-VP1 heat transfer oil is attached to PCM storage tank. The system is used to generate hot steam via flash evaporation tank. User will be able to discover the total area based on the assigned thermal load volume. The following paramters can be calculated: 1-Mean plate temperature. 2-ETC total area. 3-Overall losses. 4-Efficiency. 5-exergy analysis. The system main units are: 1-ETC. 2-PCM storage. 3-Oil pump. 4-Flash evaporation tank. 5-Water pump unit.

**MatLab-SimuLink should be used to run the model.

https://youtu.be/-PkdyOjXraI

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

This model is about power generation from salinity gradients.RED cell consists in a set of ion exchange membranes, alternating cation (CEM), and anion exchange membranes (AEM), which are charged negatively and positively respectively. Using this membrane arrangement, river and sea water flow between membranes and in this way compartments are formed. Due to the difference in salt concentration between the waters, there is an electrochemical potential difference, which is the motive force for ions to flow through the membranes from the sea water compartments, to the river water compartments.

https://youtu.be/x6dvo7m9urY

**MatLab-SimuLink should be used to run the model.

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

A plate heat exchanger is a type of heat exchanger that uses metal plates to transfer heat between two fluids. This has a major advantage over a conventional heat exchanger in that the fluids are exposed to a much larger surface area because the fluids are spread out over the plates. The concept behind a heat exchanger is the use of pipes or other containment vessels to heat or cool one fluid by transferring heat between it and another fluid. In most cases, the exchanger consists of a coiled pipe containing one fluid that passes through a chamber containing another fluid. The walls of the pipe are usually made of metal, or another substance with a high thermal conductivity, to facilitate the interchange, whereas the outer casing of the larger chamber is made of a plastic or coated with thermal insulation, to discourage heat from escaping from the exchanger. The model is designed for water to water sides. All design aspects will be calculated beside physical properties.

https://youtu.be/qi720BInrrk

This system is about coupling different power systems with Standalone applications. The hybrid system contains the following: 1-Horizontal wind turbine. 2-Vertical wind Turbine. 3-Photovoltaic. 4-Concentrated solar gas engines (two models: Brayton and Stirling). 5-Diesel engine. 6-Main grid power. 7-Application. User should specify the application power and will be able to compare between different technologies based on the cost.

https://youtu.be/TLMpxMCSlCI

**MatLab-SimuLink (64bit) should be used to run the model.

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

This is a double pass Reverse Osmosis Membrane Desalination Process. The exit permeate from the 1st RO section could be divided or directed towards the the second section. This is a design model, so, user will be able to calculate all design aspects such as areas, flow rates, etc...

**MatLab-SimuLink should be used to run the model.

https://youtu.be/KF_saarLwq0

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

The design and operation of an Electrodialysis desalination process are based on a set of fixed and variable parameters such as stack construction, feed and product concentration, membrane properties, flow velocities, current density, recovery rates, etc. These parameters are interrelated and may be rather different for different applications. For an efficient operation of an electrodialysis desalination plant, the process has to be optimized in terms of overall costs considering component properties and operating parameters. In this study the design and optimization of an electrodialysis plant to be used for brackish water desalination has been treated. User has to assign the following:

1-Productivity. 2-Recovery ratio. 3-Inlet feed concentration.

**MatLab-SimuLink should be used to run the model.

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

Vapor-compression refrigeration or vapor-compression refrigeration system (VCRS), in which the refrigerant undergoes phase changes, is one of the many refrigeration cycles and is the most widely used method for air-conditioning of buildings and automobiles. It is also used in domestic and commercial refrigerators, large-scale warehouses for chilled or frozen storage of foods and meats, refrigerated trucks and railroad cars, and a host of other commercial and industrial services. In this model, user will be able to run the model dynamically. R134a and other ammonia fluids are used. User can add more working fluids based on his design. Cross flow cooling tower unit is used as a cooling load through the condenser unit of the vapor compression cycle.

**MatLab-SimuLink should be used to run the model.

https://youtu.be/OsuK7AomA1s

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

This system is about coupling different power systems with reverse osmosis desalination plant. The hybrid system contains the following: 1-Horizontal wind turbine. 2-Vertical wind Turbine. 3-Photovoltaic with battires. 4-Concentrated solar gas engines (two models: Brayton and Stirling). 5-Diesel engine. 6-Main grid power. 7-Reverse osmosis. User should specify the productivity and some operating conditions for RO-energy recovery unit. Also it is very important to assign the kW power per set (wind turbine) in order to evaluate the number of wind turbine needed. User can select between different systems combined with RO. RO types: 1. RO-Basic 2. RO-PWT 3. RO-PEX

**MatLab-SimuLink (64bit) should be used to run the model.

https://youtu.be/lHhBf3ne7wQ

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

Photovoltaic (PV)-Horizontal wind turbine unit (HWT) (0.3-8000kW range) is utilized to operate RO-with energy recovery devices membrane desalination plant. User should specify the productivity and some operating conditions for RO-energy recovery unit. Also it is very important to assign the kW power per set (wind turbine) in order to evaluate the number of wind turbine needed. Dynamic modeling is allowed in this model.

RO types:

1. RO-Basic

2. RO-PWT

3. RO-PEX

https://youtu.be/ujILoS24R1Y

**MatLab-SimuLink (64bit) should be used to run the model. Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub, All rights reserved.

This is a refrigeration cycle based on absorption operating conditions by the use of NH3/water refrigerant. There are four basic heat exchanger surfaces: the evaporator, the absorber, the generator, and the condenser, in addition to a liquid-liquid heat exchanger. Ammonia (NH3) is, basically, nothing more than freon. User will assign the following:

-Generator temperature.

-Absorber temperature.

-Evaporator temperature.

-Condenser temperature.

-The C.O.P

**MatLab-SimuLink should be used to run the model.

https://youtu.be/SE1-Q8V7bzY

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

Learn how to connect more than one REDS models via matlab/simulink environment. Concentrated Solar Tower-Steam Rankine Cycle with Molten Salt model has been taken as an example to be connected with solar radiation model and Photovoltaic model.

https://youtu.be/qa9ZkkiB_8Y

A fuel cell is an electrochemical cell that converts the chemical energy of a fuel (often hydrogen) and an oxidizing agent (often oxygen) into electricity through a pair of redox reactions. Fuel cells are different from most batteries in requiring a continuous source of fuel and oxygen (usually from air) to sustain the chemical reaction, whereas in a battery the chemical energy usually comes from metals and their ions or oxides that are commonly already present in the battery, except in flow batteries. Fuel cells can produce electricity continuously for as long as fuel and oxygen are supplied. User will assign the total power in order to calculate the following: 1-Cell number. 2-Mass flow rates. 3-Cell voltage. 4-Voltage losses. 5-Electrolyzer power. 6-PV design aspects, area, Isc, Voc, efficiency, number of modules, total system area, number of cells, etc...

**MatLab-SimuLink should be used to run the model.

https://youtu.be/0O7OSwtO7a8

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

This model is about power generation by the use of concentrated solar tower system (CST). Solar tower has been used for Steam Rankine Cycle (SRC). User can assign the power rate in order to obtain all design aspects such as: 1-CST field design (area, No. of mirrors, tower height, etc..). 2-Design aspects for steam Rankine cycle. 3-Cost analysis are considered. 4-Energy, Exergy, and thermo-economic streams are calculated. 5-Molten salt heat transfer fluid is used through the CST. 6-Water steam is used for steam Rankine cycle. 7-Boiler heat exchanger-Storage unit is used as an intermediate unit. 8-Single storage with embedded pump unit is used. 9-Mechanical draft cooling tower. https://youtu.be/iI-dQZvixYU

**MatLab-SimuLink should be used to run the model.

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

A reciprocating compressor or piston compressor is a positive-displacement compressor that uses pistons driven by a crankshaft to deliver gases at high pressure. The intake gas enters the suction manifold, then flows into the compression cylinder where it gets compressed by a piston driven in a reciprocating motion via a crankshaft, and is then discharged. Applications include oil refineries, gas pipelines, chemical plants, natural gas processing plants and refrigeration plants. The model is made for single cylinder (single or double acting) gas compressor.12 working gases are available in this model.

1-Monatomic gases. 2-diatomic gases. 3-Polyatomic gases.

**MatLab-SimuLink should be used to run the model.

Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub

https://youtu.be/m4U8BQMde5k

This model is about solar energy tower or solar chimney power plant. It also named as solar updraft tower (SUT) which is a design concept for a renewable-energy power plant for generating electricity from low temperature solar heat. Sunshine heats the air beneath a very wide greenhouse-like roofed collector structure surrounding the central base of a very tall chimney tower. The resulting convection causes a hot air updraft in the tower by the chimney effect. This airflow drives wind turbines, placed in the chimney updraft or around the chimney base, to produce electricity. The model calculates the design aspects such as:

-Tower height -Tower diameter -Collector diameter -Collector height

-Collector total area -Energy loss -Cost analysis

User has to assign the power and some operating conditions.

https://youtu.be/ARux5BEkqP8

 

Dr. Mohamed A Sharaf