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Sunday, August 2, 2020 | History

3 edition of Analysis of the Absorption Process and of Desiccant Cooling Systems found in the catalog.

Analysis of the Absorption Process and of Desiccant Cooling Systems

A. Barlow

Analysis of the Absorption Process and of Desiccant Cooling Systems

A Pseudo-Steady State Model for Coupled Heat and Mass Transfer

by A. Barlow

  • 34 Want to read
  • 2 Currently reading

Published by Amer Solar Energy Society .
Written in English

    Subjects:
  • Heat Transfer,
  • Solar Energy Engineering

  • The Physical Object
    FormatPaperback
    ID Numbers
    Open LibraryOL11308856M
    ISBN 100895530694
    ISBN 109780895530691
    OCLC/WorldCa228090234

    Get this from a library! Integrated absorption refrigeration systems: comparative energy and exergy analyses. [İbrahim Dinçer; Tahir Abdul Hussain Ratlamwala] -- This book provides a detailed analysis of absorption refrigeration systems, covering single effect to multi-effect systems and their applications. Both the first and second laws of thermodynamics are. The absorption cycle is commonly used in HVAC absorption chillers, typically using a solution of water and lithium bromide, or ammonia and water (as the absorbent) for cooling systems. Adsorption is when one substance is being held inside another by physical bonds on the maze of internal surfaces.

    The energy consumption for space cooling is growing faster than for any other end use in buildings, more than tripling between and The efficient use of energy is important to reduce the consumption of electricity of conventional air conditioning. This chapter presents a thermal analysis of absorption and adsorption chillers for conditioning the airspace in a building, controlling Author: Jesús Cerezo Román, Rosenberg Javier Romero Domínguez, Antonio Rodríguez Martínez, Pedro Soto Parra. An analysis is presented in this paper which explains the benefits and drawbacks of these methods based upon the wave nature of the heat and mass transfer processes occurring within the desiccant by:

    Desiccant dehumidification has been given increasing interest in the air conditioning industry. Compared with conventional vapor compression air conditioning systems, desiccant dehumidification saves energy by separating humidity control from temperature control and Cited by: 4. This paper describes some of the results of two independent studies of the effect that the properties of various desiccant materials can have on the performance of cooling systems based upon the use of thermally reactivated desiccants. One study was purely analytical in nature and viewed the.


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Analysis of the Absorption Process and of Desiccant Cooling Systems by A. Barlow Download PDF EPUB FB2

Desiccant cooling systems are heat-driven cooling units and they can be used as an alternative to the conventional vapor compression and absorption cooling systems. The operation of a desiccant cooling system is based on the use of a rotary dehumidifier (desiccant wheel) in which air is dehumidified.

Ibrahim Dincer, Marc A. Rosen, in EXERGY, Introduction. Desiccant cooling systems are heat-driven cooling units and they can be used as an alternative to the conventional vapor compression and absorption cooling systems. The operation of a desiccant cooling system is based on the use of a rotary dehumidifier (desiccant wheel) in which air is dehumidified.

This report documents a computer model that simulates the adiabatic adsorp- tionldesorption process. Developed to predict the performance of desiccant cooling systems, the model has been validated through comparison with experi- mental data for single-blow adsorption and report also con- tains a literature review on adsorption analysis, detailed discussions of the.

Desiccant cooling systems were reviewed in this communication. Liquid desiccant systems were reviewed extensively, while solid and other advanced desiccants were reviewed briefly. Hybrid of LDSs with other system were also reviewed along Cited by: Desiccant cooling systems: A review system is used for heating and cooling in an absorption cooling.

unit [40]. ance mechanisms in dehumidification process of desiccant. ANALYSIS OF DESICCANT COOLING SYSTEM Gaurav Pundir1* and S N Mishra1 *Corresponding Author: Gaurav Pundir, [email protected] Desiccant cooling systems are heat-driven cooling units and they can be used as an alternative to the conventional vapor compression and absorption cooling systems.

Its operation is based. Desiccant cooling systems are very good at providing latent cooling by reducing the humidity ratio of building air. However, when the desiccant cooling system must handle the entire load, it overdries the process air so evaporative cooling can be used for the sensible cooling.

Desiccant cooling systems combine sorptive dehumidification, heat recovery, evaporation and heating to create a cooling process which can offer energy savings compared to conventional air. The objective of this report is to provide a preliminary analysis of the principles, sensitivities, and potential for national energy savings of desiccant cooling and dehumidification systems.

The report is divided into four sections. Section I deals with the maximum theoretical performance of ideal desiccant cooling systems. Section II looks at the performance effects of non-ideal behavior of Cited by: 3. Air processing in desiccant dehumidification vs.

vapor compression 19 dehumidification Cycle of adsorption and desorption 20 Desiccant wheel 20 Conceptual diagram of the desiccant dehumidification and cooling system 22 Pennington ventilation cycle 24 Desiccant enhanced cooling 26 Isotherms of silica gel @article{osti_, title = {Performance comparison of absorption and desiccant solar cooling systems}, author = {Warren, M L and Wahlig, M}, abstractNote = {Cooling systems are required to operate over a wide range of outdoor and load conditions; however, the performance of solar cooling components is often specified and compared at a typical design point such as ARI conditions.

@article{osti_, title = {Performance analysis of an air drier for a liquid dehumidifier solar air conditioning system}, author = {Queiroz, A G and Orlando, A F and Saboya, F E.M.}, abstractNote = {A model was developed for calculating the operating conditions of a non-adiabatic liquid dehumidifier used in solar air conditioning systems.

Desiccant cooling systems are basically open cycle systems, using water as refrigerant in direct contact with air. The thermally driven cooling cycle is a combination of evaporative cooling with air dehumidification by a desiccant, i.e.

a hygroscopic material. For. This study performs a deep economic and environmental analysis of the desiccant cooling systems, comparing it with traditional vapor compression based systems: In order to achieve this objective a user-friendly software was created, called the DCSS – Desiccant Cooling Simulation Software – that simulates the operation of the system.

namely the process air, is dried by the desiccant. During this process the heat of absorption is released to the air. The second air stream, called reactivation or regeneration air, is heated. It dries the desiccant. The regeneration air can be heated by solar collectors.

Abstract. A survey of liquid desiccant cooling systems is presented, along with references to recent work and an assessment of the potential and future research necessary for successful large-scale by: An Evaporative and Desiccant Cooling System for Air Conditioning in Humid Climates Evaporative cooling operates using water and air as working fluids.

It consists in water evaporation, through the passage of an air flow, thus decreasing the air temperature. This system has a great potential to provide thermal comfort in places where air humidity is.

Desiccant cooling air conditioning: a review K. Daou, R.Z. Wang*, Z.Z. Xia In this paper, the principles underlying the operation of desiccant cooling systems are recalled and their actual technological applications are discussed.

Through a literature review, the feasibility of water vapour contained in the process air (below the dew. recorded. Desiccant cooling system is one of the options in our daily life to provide the best indoor air quality and thermal comfort with the minimum consumption of energy.

In this paper, basically the principles of desiccant cooling systems have been discussed and studied. Through performance studies. Desiccant cooling systems can be operated in a recirculation mode, in ventilation mode, Dunkle also called recirculation cycle, the process inlet air is the return air from the space being conditioned and the regeneration air is the outdoor air.

Figure 3: Solid Desiccant Cooling System with heat released by this absorption. vapor absorption rate. Calcium chloride desiccant was used for experimentation.

A linear mathematical equation expressing concentration and concentration ratio as a function of time described the sorption process.

The slope of this line, termed the sorption constant, increased with increasing air temperature and/or decreasing desiccant temperature.This paper presents preliminary findings of the energy analysis of a cooling system with multistage evaporative coolers using liquid desiccant dehumidifier between the stages.

The proposed evaporative cooling system utilizes the air humidity for cooling in humid areas and requires no additional water by: 3.An evaporative and desiccant cooling system for air conditioning in humid climates. the hot desiccant rotates back into the process air, where a small portion of the process air cools the desiccant so it can adsorb more moisture from the balance of the process air stream.

P.L. and Kaushik, S.C.,"Optimal design of liquid.