Effect of Condenser Air Flow on the Performance of Split Air Conditioner

نویسندگان

  • Amr O. Elsayed
  • Abdulrahman S. Hariri
چکیده

Split air conditioning units are usually used for small and medium scale residential buildings. Therefore, more energy efficiency and lower cost are needed along with reliable control for the air conditioning units. An experimental investigation has been carried out to study the performance of a direct expansion air conditioning (A/C) unit having a variable speed condenser fan. The modulation of heat rejection airflow has been controlled with the outdoor air temperature via a Proportional Integral Differential (PID) controller. The control algorithm allows increasing the speed of condenser fan with the increase of outdoor air temperature and vice verse. The maximum rated air flow of the fan is 0.43 m3/s at 42oC outdoor air temperature and the minimum is 0.28m3/s. To facilitate variation of refrigerant flow rate according to the evaporator load, the traditional capillary tube was replaced with a suitable thermostatic expansion valve and liquid refrigerant reserve. The influence of condenser airflow and its temperature on the A/C unit performance and compressor power consumption has been investigated and presented at different evaporator cooling load. It has been found that a 10 % reduction in compressor power consumption is achieved by increasing the condenser air flow by about 50%.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Evaluation of Evaporative Cooling for Heat Transfer in the Condenser of Window-Air Conditioners

There is a demand for reduced power consumption in the vapor compression refrigeration cycle. Coefficient of performance of window-air conditioners considerably decreases and power consumption increases under very hot conditions. These problems have encouragecl studies aimed at improving the performance of window-air-conditioners by enhancing the heat transfer rate in the condenser. In this ar...

متن کامل

Evaluation of Evaporative Cooling for Heat Transfer in the Condenser of Window-Air Conditioners

There is a demand for reduced power consumption in the vapor compression refrigeration cycle. Coefficient of performance of window-air conditioners considerably decreases and power consumption increases under very hot conditions. These problems have encouragecl studies aimed at improving the performance of window-air-conditioners by enhancing the heat transfer rate in the condenser. In this ar...

متن کامل

Effect of Using Evaporative Condenser Instead of Air Condenser in Window-air Conditioners

In this paper,&#10 the application of evaporative cooling for refrigeration cycle to reduce power consumption in hot climates is emphasized. Experimental and analytical investigations were performed in order to specify the effect of evaporative cooling condenser instead of the commonly used air cooling condenser in window-air-conditioners. Evaporative condenser can reject more heat, thereby pre...

متن کامل

Effect of Using Evaporative Condenser Instead of Air Condenser in Window-air Conditioners

In this paper, the application of evaporative cooling for refrigeration cycle to reduce power consumption in hot climates is emphasized. Experimental and analytical investigations were performed in order to specify the effect of evaporative cooling condenser instead of the commonly used air cooling condenser in window-air-conditioners. Evaporative condenser can reject more heat, thereby preve...

متن کامل

Study and Optimization of Performance Parameters of Air- Conditioner by Using Waste Water of Water-Cooler

Reduction of energy consumption and rise of cooling is a major concern in the air conditioning system especially in the area with very hot weather conditions. In hot weather conditions, the air conditioner takes more electrical power consumption to bring the comfort in specified area. In many Middle East countries, the atmospheric temperature approaches 40°C to 50°C or sometimes higher. During ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2011