Hot water is an essential requirement in most Residence. Gas, electricity and furnace oil are beingused for obtaining hot water. These sources are not readily available and are scarce in a part of Japanat present. Fortunately, solar thermal energy is plentiful which can be successfully harnessed forgetting hot water. In this paper, performance of the copper coil heat exchanger type solar water heaterhas been described, which provides domestic hot water for a four-person family.

The ventilation efficiency of different ventilation patterns inside a room containing one person and officefurniture arranged by different inlet/outlet configurations was investigated. The numerical simulation(CFD) was first adopted to predict air flow pattern and ventilation performance. Then, a laboratoryexperimental measurement at room air distribution in a full-scale test chamber was conducted using thehot wire velocimetry (IFA300) to validate the simulation results.

Utilizing renewable energy systems (RES) is an important part of the design and development of greenbuildings. However, it is unreasonable to assess renewable energy utilization (REU) only with the netratio of renewable energy earning to a buildings total energy consumption, while ignoring the systemefficiency of RES with the additional conventional energy consumption, such as electricity. In this paper,the energy quality coefficient (EQC) is introduced to describe the quality of energy, while the energyconversion coefficient (ECC) is applied to evaluate energy system efficiency.

On the environmental problem, the university is considered as the education organ to play a guidingrole, it will be very important materials to grasp the consumption situation of the energy for saving theenergy, making consuming energy standards in the future. But there are few reports of energyconsumption about the Chinese campus at present. This article is aimed at Jilin Architectural and CivilEngineering Institute, and the situation of various energy sources consumption was investigated byfield survey and questionnaires.

Many existing Building Management systems (BMS) used for building services system control were notdesigned to incorporate records of occupant view and did not integrated the real-time occupantsresponse in order to fine tune the building services system to the individual demands in a dynamicmanner. This study based on a survey conducted for collecting occupants feedbacks towards indoorthermal environments, proposed a Bayesian approach in operation of building services systems ofair-conditioned buildings in a humid and subtropical climate in Hong Kong.

This study reports the findings from subjective responses of tropically-acclimatized people and theirrelationships with cutaneous indicators at three air temperatures, i.e. 20.0, 23.0, and 26.0C. A blindintervention study was conducted in a simulated office environment. Ninety-six subjects were recruitedand divided into 6 groups of 16 subjects. Each group was asked to perform simulated office tasks in theroom for a continuous four-hour session. The subjects also completed surveys on general thermalcomfort and sensations at various body locations.

Most of the electric power in China is from coal combustion power station, so that the pressure ofenvironmental protection is high. At the same time, there is big difference of development between EastChina and West China, which brings some difficulties to centralized power delivering. Because of itscharacteristics, distributed power (DP) can slow down these contradictions, so it develops quickly inChina.

It is difficult to satisfy all workers in an office with respect to thermal comfort by a total air conditioningsystem. An individually controlled system that can create a preferable thermal environment for eachoccupant is therefore needed. In the present study, a chair incorporating two fans under the seat andbehind the backrest of the chair to provide isothermal forced airflow to the occupant was developed.Experiments were conducted in a climate chamber during summer. Seven healthy college studentsparticipated as subjects.

This paper aims at pointing out that how a District Cooling system can be a more energy efficientsolution compared with a decentralized cooling solution. In order to give a fair comparison, the authorapplies equivalent electric power coefficient of performance. This comparison approach will beinstructive for designing an energy efficient cooling solution in China.Firstly, the paper gives the definition, components and possible energy source of a District CoolingSystem.

The particle-free conditions provided by cleanrooms are vital for much of modern manufacturingindustry. There has been a substantial increase in the working environment of cleanroom. Specialgarments are therefore dressed in all cleanrooms to control particles and microbiological contaminationdispersed from personnel in cleanrooms. However, more tightly-woven fabrics of cleanroom garmentswill result in thermal comfort dissatisfaction. In this study, field tests of a cleanroom have been carriedout in our newly constructed MEMS laboratory.