Natural gas fired chillers

Direct-fired chillers contain a burner that runs on natural gas or another fuel to produce the heat required for the absorption process. Indirect-fired chillers use steam or hot water produced externally by a boiler or cogeneration system. A system of piping and heat exchangers transfers the heat to the chiller.

Traditionally, gas-fired chillers were able to overcome their higher first cost compared to electric chillers because gas-fired systems produce lower electrical demand costs. However, the steady increase in efficiency of electric chillers has narrowed the operating cost differential with gas chillers.

Tranes direct-fired absorption chillers offer you a choice in how energy is consumed to produce chilled water. The chiller uses natural gas or other fuels to fire the absorption refrigeration cycle. Direct-fired absorption chillers can be used as a primary component for hybrid plants or other applications where electrical demand and consumption are expensive or in short supply.

Absorption chillers can be fired directly or indirectly, and can be single-effect or double-effect. Indirect- fired chillers use heat from another source, while direct- fired chillers use a natural gas burner to power the cycle. AIR-TO-WATER GAS FIRED ABSORPTION HEAT PUMP For heating. The differences between natural gas absorption cooling and traditional electric systems translate into significant benefits for facilities.

These systems greatly reduce electric consumption and peak demand.

Direct- fired absorption chillers can be used as a primary component for hybrid plants or other applications where electrical demand and consumption are expensive or in short supply. II Applications In addition to being direct fired by natural gas , absorption chillers can run off of hot water, steam, or waste heat, making them an integral part of cogeneration systems or anywhere that waste heat in any form is available. Burns oil or gas in high efficiency, low Nitrous Oxide burner, producing heat as the driving energy. Applications in industrial, commercial and civil use cases with abundant oil or gas , where there is a requirement for cooling in the summer and heating in winter.

Cooling capacity: 528~8kW. Heating capacity: 374~5kW. Two-stage high efficiency design reduces energy costs. Operates as a chiller or heater. Fired by clean burning natural gas , N0. Quiet, vibration-free operation. Few moving parts equates to high reliability.

Yazaki MG-Series gas fired DOUBLE-EFFECT chiller-heaters, with cooling capacities of 1and 2tons of refrigeration, are designed for commercial applications where chilled water and hot water are used in a central air conditioning system. The condenser is water cooled and heat is rejected through a cooling tower. Over the last decade, advances in natural gas cooling technology made large chiller units available to business and industry, allowing them to take advantage of the efficiency, economy, reliability and superior performance of natural gas.

There are two basic types of chiller cycles: vapor compression and sorption. Vapor compression chillers use reciprocating, screw, or centrifugal compressors to power the cycle. Learn more about CHILLERS on Robur.

Utilizes Caterpillar natural gas engines. Steam, Hot Water, Thermal Flui or gas fired. GAS - FIRED DOUBLE-EFFECT ABSORPTION CHILLER-HEATER. This product is a gas - fired double-effect absorption unit which provides chilled water for cooling or hot water for heating in central plant-type air conditioning systems. These chillers are essentially the same as electric driven counterparts except open drive compressors are used.

These in turn are matched with natural gas engines and often optional heat recovery heat exchangers. Most chillers use R-refrigerant. Another practical approach to plant cooling is the use of a natural gas - fired engine-driven chiller.

Again, this does not contribute to plant electrical demand and can take full advantage of lower industrial natural gas rates, normally during the season when gas usage is down. Over the last decade, manufacturers made significant advances in developing and producing a new generation of natural gas refrigeration, cooling, and humidity control equipment. Both these components are environmentally safe. Gas AC Servel is still around.

These units use ammonia as the refrigerant while water is the absorbent. Continent Supply in Philadelphia is a big dealer in them. Also York International makes a natural gas fired piston engine driven unit. Servels are time consuming to service and are expensive to buy.

Recovered heat is used for space heating, air conditioning and domestic hot water. Gas - fired two-stage absorption chiller. Notice the absence of a boiler because natural gas is utilized directly in the chiller. Input energy includes natural gas as well as electricity for auxiliary equipment. These are similar to their electric counterparts but use compressors driven by natural gas engines.

While the majority of the packaged chillers sold and installed are electric drive, efforts by the gas industry have resulted in several manufacturers offering packaged natural gas engine driven chillers using reciprocating, screw and centrifugal chillers. DF reduces costly elec-tricity bills and qualifies for utility rebates and incentives as a gas cooling product. Flue gas fired chiller is a critical part of the tri-generation system.

In the tri-generation system, generator is used to produce electricity while exhaust heat is utilized as the driving energy of absorption chiller , which is to provide heating or cooling for residential community or commercial building. Most absorption chillers use either steam or fuel ( natural gas , propane) for heat input. But, waste heat from process, reciprocating engine, gas turbine, or a cogeneration system can also be used in the absorption process. In addition, as a natural gas - fired chiller significantly reduces the cost to cool the ice sheet, operating costs are low enough to keep the rink open for skating beyond its usual October-to-March skating season. This unit is currently sitting at the Dover Arena but has not been used for refrigeration for the last years.

Photo courtesy of Tecogen, Inc. Small single-stage gas - fired absorption chillers with capacities below kW are produced in Europe and North America using ammonia as the refrigerant and water as the absorbent. Engine driven chiller system. Commercial Rooftop and Split Systems to Tons. Variable Refrigerant Flow, Ductless Split Systems.

Replacement Rooftop and Multi-zone Units, Custom Rooftop Units. Two Stage Absorption Chillers. Provide chilled water for cooling when high pressure steam, high temperature hot water (HTHW) or natural gas , as well as electric power and cooling tower (or other water for heat rejection) is available.