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1. Classification by Flow Arrangement

Type	Flow Structure	Features	Typical Applications
Type I	Single-channel on both sides	Continuous flow path, low resistance, high heat transfer efficiency	Liquid-to-liquid, oil heating, water heating
Type II	Single-channel + Multi-channel	One side is single-channel, the other side is divided into multiple channels; ideal for condensation	Steam condensation, gas-liquid heat exchange
Type III	Multi-channel on both sides	Both sides are multi-channel; suitable for large flow, low pressure drop	Large water cooling systems, low-pressure applications

2. Classification by Structure and Pressure Rating

Model	Structure	Typical Pressure Ratings	Features
B-type (Welded)	Fully welded, non-removable	0.6 MPa / 1.6 MPa	Compact, sealed, ideal for clean fluids, low maintenance
T-type (Detachable)	With removable end cover	0.6 MPa / 1.6 MPa	Easy to open and clean, suitable for fouling or impure fluids

Common Combined Models:

I 6B Type: Type I flow pattern, 0.6 MPa, fully welded
I 16B Type: Type I flow pattern, 1.6 MPa, fully welded
I 6T Type: Type I flow pattern, 0.6 MPa, detachable
I 16T Type: Type I flow pattern, 1.6 MPa, detachable

3. Key Technical Parameters Explained

1. Nominal Heat Exchange Area

This is the effective surface area available for heat transfer between fluids, typically measured in square meters (㎡).
Larger surface areas allow for greater heat transfer capacity.

2. Channel Spacing

Refers to the gap between two adjacent spiral plates, measured in millimeters (mm).

Small spacing (e.g., 5mm): Ideal for clean liquids, higher heat transfer rates
Larger spacing (e.g., 10–20mm): Suitable for gas or fluid with suspended solids; reduces clogging

3. Flow Velocity

The actual velocity of fluid within the channel, measured in meters per second (m/s).
Typical design range is 0.5–2.5 m/s:

Low velocity: May reduce efficiency and promote fouling
High velocity: Increases pressure drop and energy consumption

4. Flow Rate at 1 m/s

Indicates the processing capacity (in m³/h) when the fluid flows at 1 meter per second.
Its a standardized reference value for evaluating capacity across different models.

Data Sheet and Technical Specification of Spiral Plate Heat Exchanger

Nominal Heat Exchange Area	Channel Spacing	Calculated Heat Exchange Area	Processing Capacity at 1 m/s Flow Velocity	Nominal Pipe Diameter	Weight (kg)
Nominal Heat Exchange Area	Channel Spacing	Calculated Heat Exchange Area	Processing Capacity at 1 m/s Flow Velocity	Nominal Pipe Diameter	Weight (kg)		m²	mm	m²	m³/h	mm	I 6B Type	I 16B Type
1	6	1	3.89	40	44	50
2	6	2.1	3.89	40	78	85
4	6	4.4	8.2	50	131	135
	10	4.5	17.3	80	129	133
	10	4.8	13.7	70	161	205
8	6	7.3	8.21	50	212	215
	10	7.85	17.3	80	235	273
	10	7.3	20.9	80	237	275
10	6	11.1	8.21	50	295	355
	10	11.5	17.3	80	315	405
	10	11.2	20.9	80	305	395
15	6	16.9	12.54	70	415	490
	10	14.72	17.3	80	405	575
	10	15	28.1	80	400	570
	14	15.6	39.3	100	505	680
20	6	21.7	8.21	50	540	710
	10	21	20.9	80	555	735
	14	20.9	39.3	100	660	830
25	10	26.6	29.9	80	610	950
25	14	26.9	39.2	100	720	1060
30	10	28.2	28.1		750	1180
30	14	32.2	39.2		980	1370
40	10	45.4	35.3		1130	1515
40	14	40.2	19.4	125	1200	1630
50	10	53.9	35.3	100	1360	1755
60	10	61.05	35.3	100	1920	2112
60	14	60.08	49.4	125	2000	2200
80	10	81.83	35.3	100	2560	2816
80	14	80.9	49.4	125	2667	1934
100	10	101.9	35.3	100	3200	3520
100	14	100.06	49.4	125	3333	3666
120	10	115.5	35.3	100	3870	4257
120	14	119	49.4	125	4020	4422
130	14	128.8	49.4	125	4241	4665
130	18	129.09	63.5	150	4462	4908
150	14	148.1	49.4	125	4702	5172
150	18	148.2	63.5	150	4962	5458

5. Model Selection Recommendations

Operating Condition	Recommended Model
Clean media, continuous operation	B-type (welded)
Fouling or dirty fluids	T-type (detachable)
High heat exchange efficiency, low pressure drop	Type I
Condensation or gas-liquid heat transfer	Type II
Large flow rate, low pressure systems	Type III

Proper model selection ensures efficient heat transfer, reduces maintenance, and extends equipment lifespan.

Conclusion

Spiral Plate Heat Exchangers offer multiple configurations to meet diverse industrial needs. Understanding the differences between Type I, II, III, as well as structural models like B-type and T-type, along with interpreting parameters such as channel spacing, flow velocity, and processing capacity, is key to effective application and selection.

???? Need a custom solution or detailed specification sheet? Contact our engineering team for a tailored recommendation based on your operating conditions.

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