Cryogenic subcooler

TS’s subcoolers are aimed at processes that require a cryogenic fluid with a pressure greater than 1.013 bar absolute, but with a temperature as low as possible. Positioned close to the point of use they allow subcooling*, i.e., cooling below the boiling temperature, of the cryogenic stream delivered to the process.

(*) The amount of cooling achievable depends on the fluid flow rate through the system and the relative boiling temperature at 1.013 barg. For example, in the case of a mass flow rate of 70 kg/h of liquid nitrogen at a pressure of 9 bar g, cooling around 22°C can be achieved.

It consists of a super-insulated vacuum vessel, inside which a heat exchanger is immersed in a bath of cryogenic liquid at atmospheric pressure. The cooling process is managed automatically through two parameters: the level of the cryogenic immersion bath and the flow rate of fluid through the heat exchanger.

The refilling of the bath is done by drawing a portion of the fluid inlet to the subcooler. While the flow rate is managed through a control valve, with the degree of opening retro-acted automatically based on a temperature detected at the outlet of the coil or near the delivery point, or set to a preset value.

MAIN FEATURES

Maximum Allowable Working Pressure (MAWP): 12 bar g
Rated capacity of standard versions: up to 100kg/h, depending on the pressure differential across the system
Simple and intuitive management logic
Service temperature for parts in contact with cryogenic nitrogen: -196…40°C
Main materials in contact with the process fluid: stainless steel, copper, aluminum, brass, PTFE
Safety valve certified to meet the requirements of Cat. IV of the PED Directive
Total dry weight (excluding electrical panel): 50…65 kg (depending on the specific model)
Maximum dimensions (WxDxH): 360x641x1200mm
Utilities required: 230 Vac/50Hz power supply; Air or nitrogen instruments with minimum pressure 5 bar g

BENEFITS

It delivers a pressurized cryogenic liquid at a stable and lowest temperature technically possible**
It allows to increase the transfer pressure of the cryogenic fluid without suffering the resulting temperature rise
Safety, reliability and performance that endures over time
15 years of references with dozens of processes served

(**) It may require implementation with degassing devices to evacuate gas formed by evaporation within the distribution system.

AVAILABLE OPTIONS

Fully superinsulated vacuum (TSV) configurations.
Accessories for upstream and downstream setups, such as cryogenic, superinsulated (TSV) and non-superinsulated (TSV) piping and hoses, degassing devices, components, and instrumentation
Safety devices for detecting oxygen in the atmosphere surrounding equipment confining liquid nitrogen
Finned heat exchangers for cooldown and boil-off nitrogen heating of the cryogenic bath

FIELDS OF APPLICATION

Metal and plastic profile extrusion processes
Metalfab processes
Chemical and pharmaceutical processes

PROCESS FLUIDS

Argon; Nitrogen

COMPLIANCE

PED European Directive, for cases in which classification in one of the Categories is not envisaged, compliance with the requirements of Art. 4.3 of that Directive is nevertheless attested, with particular reference to the Rule of Art in accordance with specific standards and guidelines
LVD European Directive, for electrical panels