BASIC STUDY ON HIGHLY EFFICIENT VENTILATION AND AIR-CONDITIONING SYSTEM BY CONSIDERING DISTRIBUTION OF FRESH AIR

Fully Fresh Air Air-conditioning System Equipped with Double Heat Pipe Based Heat Recovery Technology

The using of double heat pipe based heat exchanger (HPHX) in a conventional fully fresh air air-conditioning (AC) system was examined in the present study. The fabricated HPHXs were tested under the actual conditions and the measured data were used to study the performance of the existing AC system (System A) and AC system equipped with the double HPHX (System B) for a yearly operation through ...

Design and operation optimization of an air conditioning system through simulation: an hour-by-hour simulation study

In the present research, performance validation of a Heating, Ventilation, and Air Conditioning (HVAC) system operating in a library building was conducted. The operating HVAC system was studied in terms of the provided indoor air conditions and energy consumption level. The fieldwork measurements showed that the HVAC system is not capable of providing the desired indoor air conditions based on...

Air Conditioning Check and Air Conditioning Service

Alternative Air Conditioning Technologies: Underfloor Air Distribution (UFAD): Technology Focus

Introduction and Background Recent trends in today’s office environment make it increasingly more difficult for conventional centralized HVAC systems to satisfy the environmental preferences of individual office workers using the standardized approach of providing a single uniform thermal and ventilation environment. Since its original introduction in West Germany during the 1950s, the open pla...

Study On Energy Efficient Operation of Air-conditioning Cooling Water System

The control logic of frequency adjustment for pump and cooling tower fan has been presented in this paper, based on the operation mode of a chiller with one pump and one cooling tower. Optimum outlet water temperature control of cooing tower has been put forward through analysis and comparison among factors influencing it based on measured data. A mathematical model of energy consumption has be...