Evaluating the cooling potential of a geothermal-assisted ventilation system for multi-family dwellings in the Scandinavian climate

被引：9

作者：

Wang, Cong ^{[1
,2
]}

Wang, Qian ^{[1
,3
]}

Nourozi, Behrouz ^{[1
]}

Pieska, Henrikki ^{[1
]}

Ploskic, Adnan ^{[1
,4
]}

机构：

[1] KTH Royal Inst Technol, Dept Civil & Architectural Engn, Brinellvagen 23, S-10044 Stockholm, Sweden

[2] Shanghai Inst Technol, Coll Urban Construct & Safety Engn, Shanghai 201418, Peoples R China

[3] Uponor AB, Hackstavagen 1, S-72132 Vasteras, Sweden

[4] Bravida Holding AB, Mikrofonvagen 28, S-12637 Hagersten, Sweden

来源：

BUILDING AND ENVIRONMENT | 2021年 / 204卷

关键词：

Mechanical ventilation with heat recovery; Geothermal energy; Hours of people dissatisfied; Operative temperature; High-temperature cooling; ENERGY-DEMAND SAVINGS; AIR; BUILDINGS; TEMPERATURE; PERFORMANCE; ENVIRONMENT; HEAT; VALIDATION; SWEDEN;

D O I：

10.1016/j.buildenv.2021.108114

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In recent years, the increasing occurrence of heatwaves raises the cooling need of residential buildings in Scandinavian countries, which are traditionally not equipped with active cooling systems. Indoor overheating caused by such heatwaves leads to severe consequences for occupants, especially kids and seniors. Efficient and economical cooling solutions are urgently needed to cope with frequent heatwaves. The present study investigated the novel usage of the geothermal-assisted mechanical ventilation with heat recovery (GEO-MVHR) system for cooling purposes in typical Swedish multi-family dwellings. The cooling potential of the system and its contributions to thermal comfort were evaluated. Dynamic simulations were conducted to assess the system's cooling performance under two climate scenarios: the climate of 2018 representing an extreme year with excessively hot summer and the climate of a typical meteorological year. The GEO-MVHR system shows great potential in mitigating indoor overheating with improved thermal comfort. A ventilation airflow rate of 0.50-0.70 l/s/m(2) is suggested for multi-family dwellings to maximize the cooling potential of the GEO-MVHR system. The indoor operative temperature could be reduced by up to 3 degrees C with the GEO-MVHR system operating for cooling. Modulating the supply air temperature of the GEO-MVHR system based on indoor thermal conditions is recommended, as it shows the advantage of avoiding unnecessary overcooling and energy saving.

引用

页数：13

共 52 条

[1]

[Anonymous], 2016, FORVARMNING VENTILAT

[2]

[Anonymous], 2003, IEA SOLAR HEATING CO

[3]

[Anonymous], 2014, IDA ICE BOR MOD US G

[4]

[Anonymous], 2010, ANSIASHRAE552010

[5]

[Anonymous], 2005, Ergonomics of the thermal environment _ Analytical determination and interpretation of thermal comfort using calculation of the PMV and PPD indices and local thermal comfort criteria

[6]

[Anonymous], 2007, 152512007 EN

[7] A comparative study on borehole heat exchanger size for direct ground coupled cooling systems using active chilled beams and TABS [J].