Improvements of stratified micro-environments on the satisfaction of individual thermal preferences and energy-efficiency
Bibliographic Data
| ID | 21228909 |
|---|---|
| Authors | Xue Tian (0000-0001-6140-4162, City University of Hong Kong), Yuchun Zhang (0000-0001-5488-2502, City University of Hong Kong), Zhang Lin (0000-0002-8421-879X, City University of Hong Kong, corresponding author) |
| Year | 2023 |
| Volume | 96 |
| Pages | 104683 |
| Publication date | 2023-09-01 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Sustainable Cities and Society (JOURNAL) |
| Journal identifiers | ISSN: 2210-6707 • E-ISSN: 2210-6715 |
| Publisher | Elsevier BV (PUBLISHER) |
| DOI | 10.1016/j.scs.2023.104683 |
| OpenAlex | W4378591379 |
| Language | EN |
| Citations received | 1 |
| References cited | 55 |
Stratified micro-environments (SME) aim to simultaneously provide various thermal comfort levels in a shared space to satisfy individual needs at different positions. The first objective of this study is to find out the quantitative improvements made by applying the SME against stratum ventilation (SV), mixing ventilation (MV), and displacement ventilation (DV). Thermal comfort indices, including predicted mean vote (PMV) and draft rate (DR), are used to quantify individual preferences. The PMV 1 and PMV 2 represent overall thermal sensation levels at Positions 1 and 2, set in a simulated small office, respectively. The DRs are named in the same rule. Results show that the |PMV 1 - PMV 2 | value under SV, MV, and DV only reaches 24.7%, 4.4%, and 4.6% of that under the SME on average, and the |DR 1 -DR 2 | value reaches 24.9%, 10.6%, and 7.0%. Later, the PMV prediction model for non-free-jet conditions is developed by multiple linear regression method. With practical constraints attached, the scope for the SME operation is identified. The maximum |PMV 1 - PMV 2 | value is 1.8; for DR, it is 24.9%. Only 9.9% of the PMV combinations and 3.8% of the DR combinations under the SME can be satisfied by total volume ventilation (TVV). Lastly, a normal distribution of PMV preference of [-0.5, 0.5] consisting of 40 individuals is utilized as a case study. Over 85% preferences are better satisfied by the SME than TVV, accompanied by an energy-saving rate of 55%-95% than MV
Architectural engineering · Displacement ventilation · Geography · Meteorology · Preference · Simulation · Statistics · Thermal · Thermal comfort · Thermal sensation · Building Energy and Comfort Optimization · Computer Science · Engineering · Environmental Science · Mathematics · Urban Heat Island Mitigation · Wind and Air Flow Studies · Mechanical Engineering
Insights on critical parameters and conditions for personalized ventilation
Experimental study of local thermal comfort and ventilation performance for mixing, displacement and stratum ventilation in an office
Evaluation of sidewall air supply with the stratified indoor environment in a consultation room
Numerical comparison of exhaled particle dispersion under different air distributions for winter heating
Influence of design parameters on the night ventilation performance in office buildings based on sensitivity analysis
| Unique citing works | 1 |
|---|---|
| Citations per year | 0.5 |
| Citation span | 2024 - 2024 (1) |
| Citation velocity | recent |
| Highly cited | No |
| Citation types | Neutral: 1 |