07/00 6066A WCGA Direct Fired Absorption Chillers 100 through

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Both the pumps shall be provided with isolating valves at both the suction and discharge ends for ease of removal of the pumps for maintenance, without breaking the vacuum inside 17 the chiller. Auto-decrystalization line The unit shall be provided with an overflow pipe connecting the low temperature generator to the absorber and bypassing the heat exchanger, to enable the hot solution to flow directly from the low temperature generator to the absorber and hence decrystalize the unit. This water flashes and self cools itself to approximately 39°F (3. Also the number of valves and gasketed joints is kept to the minimum to ensure leak tightness. In addition to the standard temperatures, the Microcomputer can monitor the following temperatures: • Entering chilled water temperature • Condensed refrigerant temperature (at the U-tube) • Strong solution leaving temperature from the heat exchanger 2. Shut-off valves should be provided to allow unit isolation during maintenance. The control system shall provide for modulation of the burner based on the desired chilled water leaving temperature, control and monitoring of absorbent, refrigerant and purge pumps and control interlocks for chilled water and cooling water pumps. Both the chilled and cooling water pumps should be located to discharge a positive pressure and required flow through the unit. 2 Fired Double Effect DunhamBush Absorption Chiller. Heat Exchangers There are two heat exchangers - low temperature and high temperature heat exchanger. ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ Further to facilitate the pump maintenance and repair without breaking the chiller vacuum, specially fabricated and leak tight isolation valves are provided at the suction and discharge ends for both pumps. A suitably sized burner for firing natural gas/fuel oil no. 2 fuel oil The burner supplied meets all major insurance, military and local codes. The impurities can also be a potential for mechanical damage to the unit and the system. Both the heat exchangers are shell and tube type, designed for maximum heat exchange between the two circulating streams of LiBr. Impurities in water can cause scale formation, thereby causing a reduction in heat transfer and affecting the performance of the unit. Optional Features • On-line standby canned motor pumps • Three piece shipment On-line standby absorbent and refrigerant pumps can be offered for extremely critical operations where continuous operation is required. 9 °C) 730mmHG 1 4AI 4RES 250 55 (4TB) 2 BLK 1 81 5 AI 8RES 250 2 BLK 0. The sight glasses shall be provided at the following locations to monitor the refrigerant and solution levels: • • • • • • Evaporator shell, absorber shell and high temperature generator shell. Also a suitable quantity of heat transfer additive shall be charged in the unit