Product Description

Spiral Heat Exchanger (SHE) is a kind of heat exchanger, which is made of two parallel metal plates and made into two spiral channels. The heat and cold fluid exchange through the spiral plate wall. There are two types of spiral plate heat exchanger: detachable and non detachable.

A spiral heat exchanger is more compact than many other types of heat exchangers. It has two concentric spiral channels, one for the hot fluid and the other for the cold fluid. The main advantages of a spiral heat exchanger are its high overall heat transfer coefficient, compact size for a given heat exchange area, relatively low pressure drop, and ease of cleaning. Spiral heat exchanger flow may be countercurrent flow, cocurrent flow, or crossflow.

Parameters of Spiral heat exchanger

Model	Heat Exchange Area F(m2)	Channel Space b(mm)	O.D. of Shell D(mm)	Size of Support E×F(mm)	Size of Nozzles DN(mm)		Weight (kg)
PLC30P-750-12/12	30	12/12	986	400×600	65/65	65/65	1385
PLC30P-1260-18/18		18/18	918	850×600	80/80	80/80	1610
PLC45P-750-14/14	45	14/14	1206	850×800	65/65	80/80	2035
PLC45P-1260-18/18		18/18	1095	850×700	80/80	100/100	2230
PLC60P-1260-14/14	60	14/14	1161	850×700	100/100	125/125	2755
PLC60P-1260-20/20		20/20	1295	850×800	100/100	125/125	3030
PLC90P-1260-15/15	90	15/15	1389	850×900	100/100	125/125	3900
PLC90P-1260-20/20		20/20	1535	850×1000	100/100	125/125	4125
PLC120P-1260-14/14	120	14/14	1593	850×1000	100/100	125/125	5160
PLC120P-1260-20/20		20/20	1779	850×1100	125/125	150/150	5635
PLC120P-1500-25/25		25/25	1759	1000×1100	125/125	150/150	6025

The core of our spiral heat exchangers is the concentric spiral plate coils nested in the shell. The coils form two completely separated channels with a countercurrent flow arrangement that allows the heat exchanger to achieve very close temperature approaches, making our spiral units excellent for heat recovery applications.

To maintain the plate gap, we weld spacer studs onto the coils. Besides supporting the plate gap, the studs also greatly contribute to the turbulent flow. Our Free Flow option for spiral heat exchangers is stud-less, sacrificing some turbulence in exchange for a much larger plate gap for the most challenging media. These options enable us to efficient handle any duty and we offer you a choice of regular or Free Flow channels on both sides, or a combination of the two.

No application or duty is the same for a spiral heat exchanger, which is why we customize every single one of our units from the ground up according to your specifications. We are dedicated to providing you with an individually optimized solution designed for maximal uptime and reliable operation.

Applications
Dairy/food/beverage industry
Biogas industry
Wastewater industry
Pulp and paper industry
Heavy industry
Petrochemical industry
Chemical industry


Advantages of Spiral Heat Exchangers
1. A spiral heat exchanger is compact. It has a smaller footprint and less total volume than a shell and tube or plate heat exchanger with the same heat exchange area. The unique spiral roll of long metal strips makes the channels of the same cross-sectional size for both fluids and makes a very compact unit.

2. A spiral heat exchanger is easy to clean. It is, in fact, self-cleaning for many applications because the fluid turbulence created by the spacer studs and curved pathway for the fluids tends to flush away deposits as they form. Good access for cleaning is available when needed by removing one or both of the ends of the heat exchanger, exposing the spiral channels from the side.

3. Spiral heat exchangers have a high overall heat transfer coefficient. Because of the well defined flow path through the spiral channels for both fluids and the fluid turbulence generated by the spacer studs and the curved fluid path, the overall heat transfer coefficient is typically higher for a spiral heat exchanger than for other heat exchanger types.

4. True countercurrent flow is possible with a spiral heat exchanger. Because both fluids are flowing through a channel from one end to the other, it is possible to have flow that is essentially true countercurrent flow. This also contributes to a high heat transfer efficiency and high overall heat transfer coefficient for spiral heat exchangers.