Covering cooling demand of an office room in Helsinki using wet-surface heat exchanger

Ala Hasan

Research output: Contribution to conference › Conference article › Scientific › peer-review

Abstract

Indirect evaporative cooling is considered as an energy efficient, environmentally friendly, CO2 emissions reduction and sustainable method. The most significant advantages of indirect evaporative cooling system is expressed by being able to achieve ultimate temperature to dew point temperature, and having constant moisture content in cooling process. Such air cooler strategy accomplishes by single stage regenerative-counter flow principle, in which air flows into the dry channel manipulated to the wet channel. This is implemented in the end of dry channel and causes the dry air to be cooled before branching to the wet channel. Also, the novel wet-surface heat exchanger is explained by modified effectiveness-NTU method. The aim of this research is to model and simulate a novel cooler to produce comfort environment for office room case study in Helsinki, and analyze the result of cooler performance. Simulating the wet-surface heat exchanger, as the new component of the dynamic simulation environment software such as IDA Indoor Climate and Energy (IDA ICE), needs to be modeled in the Neutral Model Format (NMF) environment. Then, the mathematical model is able to be added in IDA ICE 4 and simulate the case study in various climates. Consequently, such heat exchanger is capable to prepare the comfort indoor conditions and omit electrical cooling energy demand for vapour compressor machines in Helsinki regions.
Original languageEnglish
Publication statusPublished - 2013
MoE publication typeNot Eligible
Event5th International Forum on Retrofitting Technologies of Existing Buildings Conference, IFRTEB 2013 - Beijing, China
Duration: 21 Apr 2013 → 23 Apr 2013

Conference

Conference5th International Forum on Retrofitting Technologies of Existing Buildings Conference, IFRTEB 2013
Abbreviated titleIFRTEB 2013
CountryChina
CityBeijing
Period21/04/13 → 23/04/13

Fingerprint

Heat exchangers
Cooling
Air
Evaporative cooling systems
Compressors
Moisture
Vapors
Mathematical models
Temperature
Computer simulation

Keywords

  • sub-wet bulf temperature
  • evaporative cooling
  • wet heat exhanger

Cite this

Hasan, A. (2013). Covering cooling demand of an office room in Helsinki using wet-surface heat exchanger. Paper presented at 5th International Forum on Retrofitting Technologies of Existing Buildings Conference, IFRTEB 2013, Beijing, China.
Hasan, Ala. / Covering cooling demand of an office room in Helsinki using wet-surface heat exchanger. Paper presented at 5th International Forum on Retrofitting Technologies of Existing Buildings Conference, IFRTEB 2013, Beijing, China.
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note = "SDA: TIC Project code: 82593 - SA_OPTIENERGY; 5th International Forum on Retrofitting Technologies of Existing Buildings Conference, IFRTEB 2013, IFRTEB 2013 ; Conference date: 21-04-2013 Through 23-04-2013",
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Hasan, A 2013, 'Covering cooling demand of an office room in Helsinki using wet-surface heat exchanger' Paper presented at 5th International Forum on Retrofitting Technologies of Existing Buildings Conference, IFRTEB 2013, Beijing, China, 21/04/13 - 23/04/13, .

Covering cooling demand of an office room in Helsinki using wet-surface heat exchanger. / Hasan, Ala.

2013. Paper presented at 5th International Forum on Retrofitting Technologies of Existing Buildings Conference, IFRTEB 2013, Beijing, China.

Research output: Contribution to conference › Conference article › Scientific › peer-review

TY - CONF

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AU - Hasan, Ala

N1 - SDA: TIC Project code: 82593 - SA_OPTIENERGY

PY - 2013

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N2 - Indirect evaporative cooling is considered as an energy efficient, environmentally friendly, CO2 emissions reduction and sustainable method. The most significant advantages of indirect evaporative cooling system is expressed by being able to achieve ultimate temperature to dew point temperature, and having constant moisture content in cooling process. Such air cooler strategy accomplishes by single stage regenerative-counter flow principle, in which air flows into the dry channel manipulated to the wet channel. This is implemented in the end of dry channel and causes the dry air to be cooled before branching to the wet channel. Also, the novel wet-surface heat exchanger is explained by modified effectiveness-NTU method. The aim of this research is to model and simulate a novel cooler to produce comfort environment for office room case study in Helsinki, and analyze the result of cooler performance. Simulating the wet-surface heat exchanger, as the new component of the dynamic simulation environment software such as IDA Indoor Climate and Energy (IDA ICE), needs to be modeled in the Neutral Model Format (NMF) environment. Then, the mathematical model is able to be added in IDA ICE 4 and simulate the case study in various climates. Consequently, such heat exchanger is capable to prepare the comfort indoor conditions and omit electrical cooling energy demand for vapour compressor machines in Helsinki regions.

AB - Indirect evaporative cooling is considered as an energy efficient, environmentally friendly, CO2 emissions reduction and sustainable method. The most significant advantages of indirect evaporative cooling system is expressed by being able to achieve ultimate temperature to dew point temperature, and having constant moisture content in cooling process. Such air cooler strategy accomplishes by single stage regenerative-counter flow principle, in which air flows into the dry channel manipulated to the wet channel. This is implemented in the end of dry channel and causes the dry air to be cooled before branching to the wet channel. Also, the novel wet-surface heat exchanger is explained by modified effectiveness-NTU method. The aim of this research is to model and simulate a novel cooler to produce comfort environment for office room case study in Helsinki, and analyze the result of cooler performance. Simulating the wet-surface heat exchanger, as the new component of the dynamic simulation environment software such as IDA Indoor Climate and Energy (IDA ICE), needs to be modeled in the Neutral Model Format (NMF) environment. Then, the mathematical model is able to be added in IDA ICE 4 and simulate the case study in various climates. Consequently, such heat exchanger is capable to prepare the comfort indoor conditions and omit electrical cooling energy demand for vapour compressor machines in Helsinki regions.

KW - sub-wet bulf temperature

KW - evaporative cooling

KW - wet heat exhanger

M3 - Conference article

ER -

Hasan A. Covering cooling demand of an office room in Helsinki using wet-surface heat exchanger. 2013. Paper presented at 5th International Forum on Retrofitting Technologies of Existing Buildings Conference, IFRTEB 2013, Beijing, China.