Membrane heat exchanger in HVAC energy recovery systems, systems energy analysis

Nasif, Mohammad Shakir; Al-Waked, Rafat; Morrison, Graham; Behnia, Masud

doi:10.1016/j.enbuild.2010.05.020

Cited by 112 publications

(36 citation statements)

References 16 publications

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“…A high performance HVAC system results in a reduction of energy use leading to significant reduction in greenhouse gases production and/or pollution [1]- [5]. With the increased attention on indoor air quality (IAQ), it became essential in certain buildings to use 100% fresh air in their HVAC systems.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, more energy is required to provide a healthy and a comfortable environment to space occupants. Besides, fresh air is a major source of moisture which increases the latent load of the air conditioning system [1]. To reduce the energy associated with heating and cooling cycle whilst maintaining acceptable IAQ in buildings in hot and humid weather conditions, air-to-air fixed plates membrane enthalpy energy recovery ventilators were employed.…”

Section: Introductionmentioning

confidence: 99%

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Seasonal Weather Conditions Effect on Energy Consumption and CO2 Emission for Air Conditioning Systems Coupled with Enthalpy Energy Recovery Heat Exchanger

Nasif

Al-Waked

2014

APCBEE Procedia

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Seasonal energy consumption and subsequent CO 2 gas emission analysis of an air conditioner coupled with paper based enthalpy energy recovery ventilator has been performed. Results were then compared with a conventional air conditioning system which mixes outdoor fresh air with room return air before cooling and resupplying. Effects of the enthalpy heat exchanger and air mixing system within the air conditioning system were modeled using a modified HPRate software code. Seasonal energy analysis for different weather conditions has shown that enthalpy energy recovery system is superior in the summer season. For a 300m 2 office space, a seasonal saving of up to 1.4GJ in energy consumption and 900kg annual reduction of CO 2 gas emission could be achieved provided that the membrane enthalpy heat exchanger is utilized instead of a conventional air mixing and conditioning system.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Seasonal Weather Conditions Effect on Energy Consumption and CO2 Emission for Air Conditioning Systems Coupled with Enthalpy Energy Recovery Heat Exchanger

Nasif

Al-Waked

2014

APCBEE Procedia

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“…The requirements for optimum composition are to increase the absorption property of the absorption agent at high temperature and high humidity vapor of the external device and to make the absorbed vapor flow easily toward the dry, low-temperature internal air. 18 The part of the polymer material was validated to investigate the material properties of plate-type enthalpy exchanger on the enthalpy efficiency. 19,20 The latent heat transmission analysis model was suggested for the platetype polymer enthalpy exchanger.…”

Section: Introductionmentioning

confidence: 99%

Polypropylene melt blown nonwovens for plate-type enthalpy exchanger

et al. 2011

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An enthalpy exchanger made of melt blown nonwoven fabrics was prepared using various chemical and physical treatments, and its characteristics were compared with those of a paper exchanger. Water vapor transmission rate and air permeability, the major properties that determine enthalpy exchanger index performance, were investigated. Various measurements were conducted as a function of calendering temperature and speed, moisture content absorbance, and water soluble polymer concentration. The optimum conditions for the enthalpy exchanger made of melt blown nonwoven fabrics included 95 o C calendering temperature and 5% poly(vinyl alcohol) concentration. A commercial melt blown type heat exchanger could potentially replace the paper type.

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“…This could be mainly because most studies in the field of air-to-air energy recovery system only focus on the countries with both summer and winter season [8,18]. Only several studies can be found in the open literature pertaining to the application of this system in hot-humid climate [19] and most of them merely based on numerical study [20,21] and lack of experimental approaches [19,22,23]. Thus, to close this gap, this study proposed a design of an air-to-air energy recovery system for potential application in hot-humid climate.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on the performance of an air-to-air energy recovery for building applications in hot-humid climate

Zafirah¹,

Mardiana²

2016

J. Mech, Eng, Sci.

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The aim of this study was to evaluate the performance of an air-to-air energy recovery system in terms of latent efficiency and recovered energy. Experimental investigations were carried out under controlled conditions in Energy and IEQ Testing Unit located in School of Industrial Technology, Universiti Sains Malaysia. Tests were performed under different airflow rates ranged from 1.0 to 3.0 m/s and intake relative humidity of 70 %, 80 % and 90 %. The latent efficiency and recovered energy of the system were calculated and evaluated by adopting calculation method by ASHRAE Standard. The latent efficiency of this system ranged from 40 to 74 % and the highest value of recovered energy of 1,456 W was achieved at 2.5 m/s and 90 %. Results indicate that the latent efficiency decreased and in contrast the recovered energy increased with increasing airflow rates.

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Membrane heat exchanger in HVAC energy recovery systems, systems energy analysis

Cited by 112 publications

References 16 publications

Seasonal Weather Conditions Effect on Energy Consumption and CO2 Emission for Air Conditioning Systems Coupled with Enthalpy Energy Recovery Heat Exchanger

Seasonal Weather Conditions Effect on Energy Consumption and CO2 Emission for Air Conditioning Systems Coupled with Enthalpy Energy Recovery Heat Exchanger

Polypropylene melt blown nonwovens for plate-type enthalpy exchanger

Experimental investigation on the performance of an air-to-air energy recovery for building applications in hot-humid climate

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