Heatcraft Refrigeration Products 25000102 operation manual Pressure Loss of Liquid Refrigerants

Installation and Operations Manual

Table 2. Pressure Loss of Liquid Refrigerants

(In Liquid Line Risers - Expressed in Pressure Drop, PSIG, and Subcooling Loss, °F)

Liquid Line Rise in Feet

Refrigerant	10’		15’		20’		25’		30’		40’		50’		75’		100’
	PSIG	°F	PSIG	°F	PSIG	°F	PSIG	°F	PSIG	°F	PSIG	°F	PSIG	°F	PSIG	°F	PSIG	°F
R-12	5.4	2.8	8.1	4.2	10.7	5.4	13.4	6.9	16.1	8.3	21.5	11.3	26.9	14.3	40.3	22.4	53.7	31.0
R-22	4.8	1.6	7.3	2.3	9.7	3.1	12.1	3.8	14.5	4.7	19.4	6.2	24.2	8.0	36.3	12.1	48.4	16.5
R-502	4.9	1.5	7.3	2.2	9.7	3.0	12.1	3.7	14.6	4.5	19.5	6.0	24.3	7.6	36.4	11.5	48.6	14.8
R-134A	4.9	2.0	7.4	2.9	9.8	4.1	12.3	5.2	14.7	6.3	19.7	8.8	24.6	11.0	36.8	17.0	49.1	23.7
R-404A/R-507	4.1	1.1	6.1	1.6	8.2	2.1	10.2	2.7	12.2	3.3	16.3	4.1	20.4	5.6	30.6	8.3	40.8	11.8

Based on 110°F liquid temperature at bottom of riser

Table 3. Equivalent Feet of Pipe

(Due to Value and Fitting Friction)

Copper Tube	1/2	5/8	7/8	1-1/8	1-3/8	1-5/8	2-1/8	2-5/8	3-1/8	3-5/8	4-1/8	5-1/8	6-1/8
OD, Type “L”
Globe Value (Open)	14	16	22	28	36	42	57	69	83	99	118	138	168
Angle Value (Open)	7	9	12	15	18	21	28	34	42	49	57	70	83
90° Turn Through Tee	3	4	5	6	8	9	12	14	17	20	22	28	34
Tee - Straight Through	.75	1	1.5	2	2.5	3	3.5	4	5	6	7	9	11
or Sweep Below
90° Elbow or Reducing	1	2	2	3	4	4	5	7	8	10	12	14	16
Tee (Straight Through)

10 Part # 25000102