Daikin's Environmentally Friendly Marine Air Conditioners

　

For air conditioning on board, Daikin in 1999 introduced a deck unit using the new alternative refrigerant R407C, a kind of HFC-32/125/134a mixture, ahead of others in the industry.

This action was taken as a prompt response to the restriction of the use of R22 based air conditioners scheduled to become a regular practice from 2000 among the industry in Europe.

As a second step in this direction, the company has now introduced the USP-H series of marine packaged air conditioners using the environmentally friendly refrigerant R407C.

Salient features of the new products are summarized below.

The trend of alternative refrigerants for air conditioners is determined mostly by the preference of the non-marine users of such machines, which account for a predominant proportion of the total air conditioner output.

Following the preference of manufacturers' associations in many countries, R407C has become the most favored refrigerant in the world for packaged air conditioners.

This is the result that the refrigerant having the most suitable characteristics for each application has been selected considering the necessity of energy saving and less green-house effect for the protection of global warming potential.

For the same reason, Daikin has chosen R407C for use in marine air conditioners.

On the other hand, the use of the refrigerant R404A which is partially begun to use in the marine airconditioner, is supposed to be limited because of its high global warming potential and inferior refrigerant characteristics.

　

USPSH

　

■Features

(1)　Daikin's product is the first major marine air conditioner to use the refrigerant R407C, of which the ozone depletion potential is zero and the global warming potential is low.

(2)　A hermetic scroll compressor, which has an established reputation for reliability when installed in an existing air conditioner, has been developed for exclusive use with R407C, and is adopted for all the models of our air conditioners.

(3)　A design longevity of 40,000 hours has been realized for compressors. This feature contributes to the elimination of maintenance needs on board. The 15 and 20 HP classes are equipped with two compressors each for further enhancement of controllability of air conditioning and comfort in the airconditioned space.

(4)　Daikin's packaging technology is fully utilized. Compact structure and the use of a high-performance heat exchanger make the new models comparable in performance to the existing R22 series of the same size.

(5)　Compatibility of specifications with earlier models contributes to the ease of replacement of existing air conditioners. The required refrigerant quantity is minimized, and accordingly there is no need to worry about the refilling of refrigerant.

(6)　The manufacturer's technical resources for achieving greater durability of marine equipment, already enjoying an established reputation, are integrated in the new product, which will find no problem in enduring the severe environmental conditions encountered on board.

(7)　Daikin's global service network is complete with parts supply centers and servicing bases in major ports. In the rare event of trouble, prompt response is assured.

　

Main Specification

　

Daikin Industries, Ltd.

Address: Umeda Center Bldg., 4-12, Nakazaki-Nishi 2-chome, Kita-ku, Osaka 530-8323

Tel: +81-6-6373-4338　Fax: +81-6-6373-7297

E-mail: marine.aircon@daikin.co.jp

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