Base | SPX Cooling Technologies 7012D081

Marley / MC Fluid Cooler / Specifications: Base

Specifications

Specification Value

1.0Base:

1.1

Furnish and install a forced-draft, coun-

■ Your specification base establishes the type, configuration, base

terflow-type, factory assembled, film

material and physical limitations of the fluid cooler to be quoted.

fill, industrial duty, galvanized steel,

During the planning and layout stages of your project, you will have

closed circuit fluid cooler. Unit shall

focused your attention on a fluid cooler selection that fits your space

consist of _____ cell(s), as shown on

allotment, and whose power usage is acceptable. Limitations on

plans. The limiting overall dimensions

physical size and total operating kW avoid the introduction of unfore-

of the fluid cooler shall be _____ wide,

seen operational and site-related influences. Specifying the number of

_____ long, and _____ high. Total oper-

cells, and the maximum fan kW/cell will work to your advantage.

ating kW of all fans shall not exceed

The benefit of a forced-draft counterflow fluid cooler is that they

_____ kW, consisting of_____ @ _____

kW motor(s). Fluid cooler shall be simi-

are inherently easy to operate, access and maintain. Forced-draft

lar and equal in all respects to Marley

counterflow fluid coolers have all mechanical equipment located at a

Model _____________________.

low level for easy access, and the water distribution system is acces-

sible by simply removing the lightweight drift eliminator panels

2.0

Thermal Performance:

■ CTI Certification means that the fluid cooler has been tested under

operating conditions and found to perform as rated by the manufac-

2.1

Water as the heat transfer fluid.

turer under those circumstances. It

The fluid cooler shall be capable of

assures the buyer that the fluid cooler

cooling _____ m3/hr of water from

is not intentionally or inadvertently

_____ °C to _____ °C at a design enter-

undersized by the manufacturer.

ing air wet-bulb temperature of _____

°C. Coil pressure drop shall not exceed

_____ kPa. The thermal performance

rating shall be Certified by the Cooling

Technology Institute.

2.1Aqueous glycol solution as the heat transfer fluid.

The fluid cooler shall be capable of cooling _____ m3/hr of water from

_____ °C to _____ °C at a design enter- ing air wet-bulb temperature of _____

°C. Coil pressure drop shall not exceed

_____ kPa. The thermal performance rating shall be based on the Cooling Technology Institute certified perfor- mance rating adjusted for the thermal properties of the aqueous glycol solu- tion used.

3.0Performance Warranty:

3.1	CTI Certification notwithstanding, the	■ However, CTI certification alone is not sufficient to assure you that the
	fluid cooler manufacturer shall guaran-	fluid cooler will perform satisfactorily in your situation. Certification
	tee that the fluid cooler supplied will	is established under relatively controlled conditions, and fluid coolers
	meet the specified performance condi-	seldom operate under such ideal circumstances. They are affected by
	tions when the fluid cooler is installed	nearby structures, machinery, enclosures, effluent from other sources,
	according to plan. If, because of a	etc. Responsible and knowledgeable bidders will take such site-spe-
	suspected thermal performance defi-	cific effects into consideration in selecting the fluid cooler—but the
	ciency, the owner chooses to conduct	specifier must insist by the written specification that the designer/
	an on-site thermal performance test	manufacturer guarantee this “real world” performance. Any reluc-
	under the supervision of a qualified,	tance on the part of the bidder should cause you some concern.
	disinterested third party in accordance
	with CTI or ASME standards during the
	first year of operation; and if the fluid
	cooler fails to perform within the limits
	of test tolerance; then the fluid cooler
	manufacturer will pay for the cost of