Reliable Thermal Components for Food Service, Retail & Supermarket Cooling

Selection should start with the equipment application, refrigerant, required capacity, evaporating or condensing conditions, ambient temperature, airflow, installation envelope and duty cycle. Display cases, prep tables, beverage coolers, ice machines and walk-in systems can require different tube layouts, fin spacing, coatings and defrost arrangements. Domi can review wire-tube, fin-type, compact or custom heat-exchanger structures after receiving the operating conditions and dimensional limits. Final suitability must be validated in the complete refrigeration system rather than judged from coil dimensions alone.

Provide the display-case type, target cabinet temperature, refrigerant, evaporating conditions, required capacity, air-on temperature and humidity, airflow direction and volume, fan arrangement, defrost method, drainage requirements and available coil space. Drawings should identify tube connections, mounting points, sensor locations and service access. Open merchandisers and glass-door cases may have different frost, air-curtain and noise constraints. Prototype approval should include dimensional fit, airflow, pull-down performance, temperature uniformity and defrost behavior in the buyer’s equipment.

For an accurate quotation, send the equipment model and application, condenser or evaporator function, refrigerant, design pressures, operating temperatures, capacity target, tube and fin materials, overall dimensions, connection details, coating requirement, sample quantity, forecast volume and required project timing. A dimensioned drawing, 3D file or physical sample is preferred. Also state whether the project is a new design, OEM production part or replacement component, because the engineering review, tooling, validation and packaging scope may differ.

Key inputs include room size and target temperature, product load, pull-down requirement, refrigerant, evaporating temperature, air volume, air throw, fin spacing, frost exposure, defrost method, drain-pan arrangement and installation clearance. Freezer applications may require wider fin spacing and a coordinated electric, hot-gas or off-cycle defrost strategy. Fan selection, heater power and controls must be evaluated as part of the complete unit. Domi can review the coil and assembly scope, while the system designer should confirm room load, refrigerant circuit and control logic.

A coating may be considered where coils are exposed to salt, food acids, grease, cleaning chemicals, high humidity, condensation or frequent washdown. The correct choice depends on the contaminant, concentration, temperature, cleaning method, required service life and whether heat-transfer loss is acceptable. A generic coating label is not enough; buyers should identify the operating environment and any required test method or coating specification. Coating cannot compensate for poor drainage, chemical misuse or incompatible materials, so the complete installation and maintenance conditions also need review.

Confirm which surfaces require coating, the base materials, coating thickness or approved specification, color if relevant, connection areas that must remain uncoated and the required inspection method. The coating process may affect fin spacing, electrical grounding, brazing areas and thermal performance. If the coil will be cut, formed or brazed after coating, those operations and repair requirements should be defined in advance. Buyers should validate the coated sample in the actual chemical, humidity and temperature environment rather than relying only on a general corrosion claim.

Send the original drawing if available, equipment model, clear photographs, overall dimensions, tube diameter, row and fin configuration, connection sizes and orientation, mounting points, refrigerant and operating conditions. A physical sample is useful when the original specification is incomplete, but sample measurement alone may not reveal material grade, internal circuiting or original performance. Domi can review dimensional and manufacturing feasibility and identify missing information. The buyer should approve the replacement drawing and validate fit, capacity, pressure integrity and system performance before wider installation.

Noise depends on more than the coil. Fan type and speed, blade balance, airflow resistance, fin spacing, cabinet resonance, grille design, mounting isolation, refrigerant flow and defrost operation can all affect the result. Provide the installation location, target sound requirement if available, airflow and capacity targets, fan restrictions and cabinet geometry. A lower fan speed may reduce noise but can also reduce heat-transfer performance. The completed equipment should therefore be tested at its actual operating point, not evaluated only from the evaporator component.

Define the exact part revision, approved drawing or reference sample, annual forecast, order pattern, packaging quantity, labeling, traceability, spare-parts compatibility and destination requirements. For mixed-model orders, provide a clear SKU list and identify which parts are interchangeable. Initial samples or a pilot batch should be approved before recurring supply. Forecast information helps Domi review tooling and production planning, but each purchase order should still reference the controlled specification to avoid mixing old and revised components.

Begin with the equipment application, refrigerant, target capacity, operating temperatures, airflow, cabinet layout, hygiene and cleaning conditions, noise limits, connection requirements and expected quantities. Domi can then review manufacturability, material options, circuit layout, coating needs and sample scope. The normal path is requirement review, quotation, drawing confirmation, prototype production, dimensional and pressure inspection, buyer equipment testing and controlled production approval. Any later change to the cabinet, airflow, refrigerant or operating point should trigger a technical review because it may alter coil performance.