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In Korea, there is growing interest in the remodeling of aged apartment buildings. Traditionally, theheating panel in Korea is a wet type floor heating panel that utilizes radiation. But if a wet type floorheating panel is installed in an aged apartment during its remodeling, some problems may occur. Theyinclude failure to secure enough ceiling height, to reduce level of floor impact noise and possibility thatthe load on the existing structure is increased.

Application of night cooling to educational buildings looks very promising in mild climates. Night coolingstrategy performance in a school building to be realised in Italy during 2008 has been studied by meansof a commercial CFD code.Due to the symmetry of the building, first a 2D numerical model consisting of a vertical section throughthe three-storey building has been developed. The CFD model includes the solid zone describing theconcrete structure.

The objective of this paper is to apply a novel decoupling control method, direct feedback linear (DFL),to VAV air-conditioning system, which is differences from local linear decoupling control method. Amodel of VAV air-condition room is developed by a typical air conditioning system. Using DFL control,decoupling control is realized among multi-control loops in VAV air conditioning system and a linearmulti-inputmulti-output model is obtained. According to the VAV air conditioning model the real-timeDFL control system is designed and simulated based on MATLAB/SIMLINK.

In this study, we evaluated the effectiveness of sorptive building materials in reducing VOCsconcentrations in air using a small test chamber. Air containing a low concentration of VOCs wassupplied and any decrease in the VOCs concentrations was measured at the exhaust. Five differenttypes of building materials were investigated; activated carbon, gypsum board mixed with a givenquantity of activated carbon, board made out of activated carbon, humidity-controlling porous ceramicmaterial and ordinary gypsum board.

The energy penalty associated with the conditioning of large quantities of outdoor air in hot and humidclimates is well known. The problem is even more challenging when the application involved requires100% outdoor air. This is the case in an animal care facility, which houses different species ofanimals that are used for laboratory experiments in the field of life sciences. In such cases, it iscrucial that energy conserving HVAC systems be explored.

Heat transfer between soil and cooling water in buried pipes is presented, thus ground source heatpump can realize the transfer from low-grade energy to high-grade energy. We tested Watertemperature and flow rate of the buried pipe of Ground source heat pump system under intermittentoperation condition in Qingdao, temperature field of vertical buried double-U pipes is analyzed bythree-dimensional numerical model.

This study explored the reduction effect of indoor pollutants by the kinds of plant. The effect of reducingthe concentration of air contaminants by three species of plants was studied in a full-scale mock-upmodel. Aglaonema brevispathum, Pachira aquatica and Ficus benjamiana were used. Their positionsand amount were controlled. Field measurements were performed in models where the plants wereplaced and were not. The dimensions of the two models were equal.

In an indirect evaporative cooling (IEC) installation the extracted air is cooled by means of adiabatichumidification. By passing over an air/air heat exchanger this air cools down the supply air. A clearinteraction can be observed between the relative humidity of the extracted air and the thermal comfortrealized in the building.

Using a passive tracer gas technique, 1 and 2 week averages of local mean ages of air have beenestimated in an occupied detached single family house in mid-Sweden during one year. In this paperthe measurement result is compared with the result of transient simulation of ventilation using theCONTAM program. The simulation shows that the whole-house air change rate is dominated by theinfiltration due to mechanically created pressure difference as long as the outdoor temperaturedifference exceeds approx. 10 C.

A Simulation Program for Regional Energy and Environment Management (SPREEM) has beendeveloped for management throughout the life cycle from planning and design to operation of awide-area energy and environment whose core is DHC (district heating and cooling). Highoperability and easy understanding are required in SPREEM because its target users includedesigners and operations managers.SPREEM was developed as a simulation tool that executes calculation in Excel, and offers the highaccuracy required for management.