Simulation of energy demand for heating and cooling of a 5-storey residential buildingand evaluation of thermal conditions based on pmv and ppd thermal comfort indices Моделирование энергетических затрат на отопление и охлаждение 5-этажного жилого дома и оценка температурных условий по индексам теплового комфорта pmv и ppd
| Autor: | Usmonov Shukhrat Zaurovich |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
reconstruction
thermal comfort ventilation lcsh:HD9715-9717.5 optimum temperature PPD (Predicted Percentage of Dissatisfied) index mansard lcsh:Construction industry energy saving heat recovery additional storey lcsh:Architecture microclimate PMV (Predicted Mean Vote) index modernization lcsh:NA1-9428 |
| Zdroj: | Vestnik MGSU, Iss 10, Pp 216-229 (2013) |
| ISSN: | 2304-6600 1997-0935 |
| Popis: | The energy demand of a 5-storey residential building (a 105 series design structure built in 1980), located in the city of Khujand, Tajikistan, was simulated at the Fraunhofer Institute of Building Physics in Germany using WUFI+ software. The purpose of the simulation was to reduce the energy demand for its heating and cooling, as well as to ensure thermal comfort inside the building in the course of its reconstruction and modernization. Reconstruction and modernization of this residential building includes the construction of POLYALPAN ventilated façade, application of mineral wool insulation sheets, aerated concrete blocks, and replacement of old windows by the sealed double glazing.The analysis of micro-climatic parameters of this residential building is performed in furtherance of Category II of EN 15251 "Indoor environmental input parameters for design and assessment of energy performance of buildings addressing indoor air quality, thermal environment, lighting and acoustics", and it is based on the comprehensive assessment of the values of heat indexes PMV (Predicted Mean Vote) and PPD (Predicted Percentage of Dissatisfied). The research is based on the modeling pattern limiting the air temperature values on the premises during the heating period and reducing the energy demand for its heating through the employment of a heat exchanger. The findings prove that the analysis of micro-climatic parameters of buildings would benefit from the comprehensive and integrated assessment of the values of thermal comfort indexes PMV and PPD and from the evaluation of thermal insulation properties of clothes. Moreover, the findings demonstrate the need for development of national standards of the microclimate inside residential buildings. The research was based on the data simulating the climatic conditions in the northern region of Tajikistan during an extremely hot summer season and the optimum indoor air temperature of +24,3 °C instead of 20—22 °C. The research has proven that it is advisable to record the cooling data for five hottest months (May through September) instead of three, which is a common practice. The energy savings of 47,5 % were achieved using a 90 % efficient heat recovery procedure during the winter period when mechanical ventilation systems are in operation. Using heat exchangers after the renovation and modernization of residential buildings can significantly reduce the load on the heating system of a building.Проведен анализ микроклиматических параметров жилого дома, которые соответствуют категории II, согласно стандарту EN 15251, на основе комплексной, интегральной оценки с применением индекса теплового комфорта PMV и дискомфорта PPD. На основе модельных исследований установлены предельные значения температуры воздушной среды в помещениях за отопительный период. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|