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Study on Indoor Environment Status and Energy Consumption in Heating Residential Buildings in the Winter in Lanzhou

Author: TangLiang
Tutor: ZhangJinPing
School: Lanzhou Jiaotong University
Course: Heating,Gas Supply, Ventilation and Air Conditioning Engineering
Keywords: Residential buildings Indoor environment DeST-h Building energy simulation
CLC: TU111
Type: Master's thesis
Year: 2009
Downloads: 290
Quote: 0
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Abstract

In the environment of the energy crisis, energy conservation has become a theme of the era. Lanzhou and other large and medium-sized cities, building energy consumption and economic development of the conflict is very prominent. For residential buildings, Lanzhou located in cold regions, and is cool in summer, not much use of air conditioning, winter heating cycle, therefore, the residential building energy consumption is mainly concentrated in the winter heating. Provide the necessary information for the development of the policy of sustainable development of Lanzhou City residential assessment of Lanzhou City, the winter heating residential buildings, indoor environmental performance and building energy consumption. First overview of the construction of residential buildings located in Lanzhou City, Gansu Province, Shineisiqu forms of heating, residents of heating indoor thermal environment, as well as residential energy consumption, residential lighting, residential sound environment questionnaire, and select part of a typical building of the indoor temperature was measured to study the actual heating effect, the comparative analysis of the the different insulation form of residential indoor temperature, outdoor temperature, and the factors that affect the indoor temperature. Then DeST-h software select three different form of external wall insulation residential one building energy consumption, and comparative analysis of the energy-saving effect. Finally, an exterior wall insulation residential insulation energy saving, a comparative analysis of the residential indoor temperature before and after the energy saving and building energy consumption. On Lanzhou City residential building indoor physical environment and building energy consumption survey analysis: only 51% of the subjective satisfaction of Lanzhou City Winter heating effect, the residential heating effect of the different forms of external wall insulation differences, including exterior insulation residential subjective satisfaction of 90%. By comparative analysis of the voting results of the external insulation of residential, within the thermal insulation of residential and statistics \has a very important significance. Lanzhou residents understand the concept of residential energy conservation, energy efficient building support. For Energy Saving, households are generally worried transformation costs too little economic benefit. In building energy consumption, Lanzhou City residential building energy efficiency potential to develop solar, effectively control the amount of ventilation and ventilation time, and the promotion of residential building energy-saving, can be effective in reducing building energy consumption. The architectural lighting overall satisfaction is higher. The building sound environmental aspects minor noise pollution. The vast majority of households travel convenience. Integrated thermal, sound, light, and other factors residential environment evaluation results, higher subjective satisfaction. Select six residential indoor temperature measured in Lanzhou City, including exterior wall insulation residential 2 residential wall insulation a residential exterior insulation 3. The main test instrument: the company produced Japanese plus wild KanomaxClimomaster host with the A531 probe, Switzerland SWEMA produced Swema Air300 host with SWE03 probe, Beijing era of peak produced the TI120 series of infrared thermometer, ordinary wet and dry bulb thermometer . Outdoor meteorological parameters during the test provided by the China Meteorological Administration, Lanzhou Regional Meteorological Center. The test results show that no insulation residential indoor temperature is low, does not meet the specification requirements, daily indoor temperature fluctuations, poor thermal environment. Insulation residential indoor temperature is influenced by the outdoor temperature is, at the same time by building thermal storage and heating effects, but human activities greater impact, the night mainly affected by the heating effects. Meet regulatory requirements within the thermal insulation of residential indoor temperature fluctuation of daily indoor temperature, better thermal environment, mainly affected by the construction of internal thermal insulation the regenerative and heating affect, the human impact is small. External thermal insulation of residential indoor temperature is too high, much higher than the regulatory requirements, poor thermal environment. Exterior insulation internal thermal insulation of residential, residential main factor is the building thermal storage and heating. Insulation measures on building energy efficiency can be seen by comparing the three different external wall insulation in the form of residential heating room temperature, have an important role, especially the insulation properties of the outer insulation technology, widely used insulation technology indoor comfort thermal environment not only for households, but also for full use of energy to reduce building energy consumption, improving energy efficiency is important. Select a different form of external wall insulation residential part of the building energy simulation, building energy simulation, simulation and experimental comparison results are as follows: no insulation residential model typical insulation exterior walls, simulated indoor temperature trends measured temperature The trend is basically the same, the error can be accepted. The simulation results show that, here no insulation residential architectural window wall than appropriate, the heat load in winter and summer cooling load in the normal range, but the maximum in winter and cooling load is too large. Within the thermal insulation of residential model typical inner insulation exterior wall the analog temperature with the measured temperature trend is the same consistent, but the two peaks occur at different times, which may be calculated with the software actual heating system regulation both smaller error than no insulation. Due to this within the thermal insulation of residential exterior wall 50% are glass, so the winter heat load is too large, but its cooling load in summer. Exterior insulation facade exterior insulation residential model typical indoor temperature simulation results with internal thermal insulation of residential and consistent trend, the error is smaller, there are also peaks at different times problems. Here to exterior insulation residential window to wall ratio is too small, the air conditioning season cold load is relatively large, the smaller the heat load of the heating season. Same building energy consumption can be simulated by software. Building simulation, building envelope, indoor thermal disturbance of building energy consumption results have a great impact, while the mode of calculation of the energy consumption of software defined and built-in heating system has a crucial impact on the final result, an accurate calculation building energy consumption, the need for accurate each set. Select an insulation residential the wall insulation renovation and exterior insulation transformation, to simulate the building energy consumption and to do comparative analysis. The results show that: the transformation indoor temperature significantly improve building energy consumption, at the same time in the same indoor temperature decreased. It can be seen, no insulation residential energy saving is very necessary, conducive to saving energy, promote sustainable development.

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