CIA Reading Room cia-rdp89-00244r000300150011-6: LETTER (SANITIZED) FROM C. LOUIS CLARK

📝 Description

Approved For Release 2009/04/02 : CIA-RDP89-00244R000300150011-6 York Division Engineered Machinery Borg-Warner Corporation 5711 Edsall Road Alexandria, VA 22304 Telephone: 703/751-5500 Telex: 89-9132 CIA HEADQUARTERS Room 4E50 Washington, DC 20505 REFERENCE: CENTRIFUGAL WATER CHILLERS NEW OFFICE BUILDING ADDITION During our telephone conversation the other day, I briefly ex- plained our concern over the specification for the centrifugal water chillers for your proposed building expansion. Our Detroit office has been in close contact with your Architect/ Engineer (Smith, Hinchman, Gryles and Associates) and we under- stand that the plan is to replace some of the older chillers in the equipment room. I believe that your consulting engineer was initially planning to use four (4) new chillers approximately 2150 tons each. Three (3) chillers would be able to handle the designed 6400 ton cooling load and the fourth chiller was for standby. We understand that in order to reduce the first cost, the cent- rifugal chillers were changed to packaged hermetic type units at a capacity of 1600 tons each. Therefore four (4) units are required to handle the designed 6400 ton cooling load and a fifth chiller is for standby. We feel that your decision to change to the package type equip- ment for a chilled water plant of this size is a mistake. There are many differences in this equipment, and we would like to briefly explain what we see as the main three differences -- qual- ity, reliability, and operating and maintenance economy: Quality: The original chillers selected for this project, were the heavy-duty industrial type with over 30 years of proven performance. Industrial grade components are sel- ected to provide the exact-capacity required with a very Approved For Release 2009/04/02 CIA-RDP89-00244R000300150011-6 I STAT CIA HEADQUARTERS NOVEMBER 22, 1983 PAGE -2- efficient operation. The heart of the system, the com- pressor, is used in industry for duties ranging from very low temperatures (-180?F) refrigeration duty, to the continuous natural gas well compression, to normal air conditioning duty. The package chillers being considered have been on the market for less than 3 years. They utilize the less expensive hermetic motor/compressor design and they are an entirely different grade of equipment. Reliability: The reliability of the industrial type chiller has been proven over many years of operation on various types of cooling applications. You may want to discuss the operation and reliability of this type of equipment with operators that have first-hand experience. We would suggest that you contact the following: Pentagon National Bureau of Standards Capitol Power Plant National Institute of Health C.I.A. (your existing plant has 2 units) The National Gallery of Art has just purchased three (3) units and equipment reliability was the governing.factor'' Hermetic type chillers have a much higher risk factor than the open motor