Water Cooled Condenser High Head Pressure
Having the refrigerant vapor condensed on the outside of a tube does this.
Water cooled condenser high head pressure. They exchange heat by removing heat from one fluid and transferring it to another fluid. The cooling water temperature is too high and the condensation effect is poor. You can expect the suction pressure to be high and the head pressure to be lower than normal because the cooling tower is still operating. Plate type heat exchangers a special kind of surface exchanger are also possible but appear to be more common in liquid to liquid heat transfer applications.
A c or heat pump compressor high head pressure diagnostic faqs. The cooling tower water is 5 degrees warmer than the entering chilled water. A water cooled condenser is a heat exchanger that removes heat from refrigerant vapor and transfers it to the water running through it. As with the ambient 30 average on air cooled condensers ambient will not affect the condensing pressure on water cooled units that is why they are used.
Water cooled condensers involve a heat rejection loop where condenser heat is dissipated to the environment via water. 2 is there a rule of thumb regarding approximate head pressure based on inlet water temp and delta t across condenser. This phenomenon often occurs in high temperature seasons. V148 series three way pressure actuated valves regulate water flow to control refrigerant head pressure in systems with single or multiple water cooled condensers.
Of these debris clogging or malfunctioning txvs seem to be the most common. Here are some facts that you should know about water cooled condensers. The rated working condition of the cooling water required by the chiller is 30 35. Below we list a dozen causes of high head pressure in an air conditioner or heat pump compressor motor.
Stop the compressor and maintain water flow through the condenser while observing the refrigerant pressure in the condenser. A c or heat pump compressor high head pressure diagnostic checklist 12 causes of high head pressure at an air conditioner heat pump or other refrigeration system. The high water temperature and poor heat dissipation will inevitably lead to high condensation pressure. The condenser fan motor and the condenser coils are the most common problems i have found with the issue of high head pressure.
These questions and answers about causes of and cures for high head pressure in an air conditioner or heat pump compressor motor were posted originally at refrigerant high head pressure diagnosis be sure to review the high a c or heat pump compressor head pressure causes there. When first encountering the problem of high head pressure it is essential to check the basics first. After allowing temperatures to equalize if the refrigerant pressure corresponds to a saturation temperature that equals the water temperature the fouling is on the water side of the tubes and they will need to be cleaned. Water cooled condensers and chiller barrels are specialized heat exchangers.