Oil coolers series МРУ

• List of produced oil coolers;
• Basic standards for water;
• Climatic versions and category of placing;
• Reference designation of cooler type by order;

Oil coolers series МРУ are meant to cool the circulating oil in the system, and provide heat dissipation of friction.

Mechanism of oil cooler МРУ – is a shell-and-tube heat exchanger with a floating head, containing in its body a tube bundle consisting of rolled or smooth tubes. The baffles are located along  the tubes. These baffles provide a consistent flow around the tubes with oil.

Tubes of the tube bundle are attached to the tube board by a special flaring method. Flaring is the most common way of joining tubes and tube grids of heat exchangers. It is thanks to the flaring of tubes the whole structure becomes incredibly durable and airtight.

Oil coolers are manufactured in climatic versions of УХЛ and O, the category of placing is 3 or 4 according to GOST 15150-69.

Technical characteristics, overall and mounting dimensions of oil coolers are agreed by order.

 List of produced oil coolers:

Type and reference designation of oil cooler	Cooling surface, m2, no less than	Oil temperature, С°		Temperature of incoming water, С°	Working pressure, MPa(kgf/сm2)
		input	output		Oil	Water
МРУ-10	10	60	50	30	10	3
МРУ-19	19	50-55	40-45	30	10	3
МРУ-35	35	70	45	30	10	3

 Basic standarts of water:

Characteristics		Sort of water and reference designation
		Fresh water	Mineralized water					Sea water
		ПВ	МВ1	МВ2	МВ3	МВ4	МВ5	МВ6	МВ7	МВ8
		Reference designation of cooler version depending on sort of cooling water
		Н	М	М2						М5, СМ
Salt content in water, mg/l		0…300	300…1500	1500…3000		3000…5000		5000…15000		>15000
Type of contamination	runoff, mg/l	≤1			-		≤1	-
	suspensions, mg/l	-		≤23	≤50	-	≤25	-	Abrasive contaminants ≤25	-

Note:

Runoff – total content of ammonia, hydrogen sulfides, nitrites etc.
Suspensions – fractions of mineral and organic origin (mechanical impurities).
For water МВ2, МВ3, МВ4, МВ5 – content of chlorides has not to be more than 2000 mg/l regardless of the total salt content.

 

Climatic versions and category of placing:

УХЛ - for macroclimate areas with moderate and frigid climate.
Т - for macroclimatic areas with both dry and humid tropical climate.
4 - for use in spaces (contents) with artificial regulation of climatic conditions (in enclosed heated or cooled spaces).

 

Reference designation of cooler type by order:

МРУ-10-Н-УХЛ4, (ТКЛУ.065179.205), ТУ 3113-002-76242415-2015, where:

МРУ – series of oil cooler; 
10 - Heat exchange surface, m2;
Н - Н - cooling version depending on the characteristics of the cooling water;
УХЛ - climatic version according to GOST 15150-69;
4 - category of placing according to GOST 15150-69;
ТКЛУ.065179.205 - designation of main engineering document.

Example of product recording by export deliveries to the countries with moderate climate:
МРУ-10-Н-УХЛ4 эксп., (ТКЛУ.065179.205-02), ТУ 3113-002-76242415-2015.

Example of product recording by export deliveries to the countries with tropical climate:
МРУ-10-Н-Т4 эксп, (ТКЛУ.065179.205-04), ТУ 3113-002-76242415-2015.

 

Besides above-listed types of the oil coolers, we design and produce the oil coolers by specification of the customer.