CVF-3000E-6P-Vacuum-cooler

Why a "Big Chamber, Matched Cooling" Design?

3000kg of lettuce takes up nearly twice the volume of 3000kg of root vegetables. Leafy greens are low-density, high-volume produce. You need the big chamber to hold them, but the actual heat load doesn't require the full cooling capacity of a standard 6-pallet system.

The logic is straightforward: Leafy greens take up space but their high moisture content and surface free water evaporate efficiently, delivering the required cooling effect with less installed capacity. So we built the chamber wider and deeper (24.75m³), matched the cooling to the actual thermal load (172.8kW), and eliminated the cost premium of an oversized refrigeration system.

Technical Specifications

The 3000kg capacity is for leafy greens. Root vegetables and fruits can be loaded in higher weight per batch, but cycle times will differ — contact us for a produce-specific evaluation.

Core Components

4-Tier Configuration Options

The CVF-3000-6P supports four configuration tiers, varying by compressor, vacuum pump, and condenser type:

A separate CVF-3000W-6P water-cooled variant (double-row, 12m full length) is also available.

Key Advantages

How It Works

The CVF-3000-6P uses vacuum cooling technology. The vacuum pump system reduces chamber pressure below 600Pa. Water on the produce surface boils at low temperature, absorbing latent heat from the produce body and rapidly dropping its temperature.

The refrigeration system plays a critical role: The water vapor extracted from the chamber is drawn to the cold trap (evaporator), maintained at -10°C~-15°C by the BITZER compressor. Vapor condenses to liquid here, releasing ~2500kJ/kg of latent heat — which the refrigeration system transfers through its refrigerant cycle to the outdoor evaporative condenser. The vacuum pumps only handle non-condensable gases, so they operate with minimal moisture exposure — extending pump service life to tens of thousands of hours.

Engineering verification:

Sensible heat: Q_s = 3000 × 3.8 × (25-5) / (30×60) = 126.7 kW Latent heat (3-4% surface moisture): Q_l ≈ 126.7 × 0.36 = 45.6 kW Total load: Q_total = 126.7 + 45.6 = 172.3 kW Installed: 172.8 kW → deviation <0.3% 
Pump speed: Leybold SV300×3 = ~900 m³/h Pull-down to 600Pa: ~12-15 min → comfortable margin in 30-40 min cycle

Suitable Produce

FAQ

Q1: Can it cool fruits and root vegetables?
A: It can, but this model's "big chamber, matched cooling" design is optimized for leafy greens. If your mix contains more than 30% non-leafy produce, we recommend evaluating a standard 6-pallet configuration.

Q2: No water source for evaporative condenser — what are the options?
A: You can select Tier 4 (Copeland scroll + air-cooled), but expect 15-20% lower energy efficiency. For sites with both water limitations and high electricity costs, we recommend a site survey before finalizing configuration.

Q3: What export certifications are available?
A: CE, CSA, BV, SGS, UL — all configurable. Cold media upgrade to R404A/R449A available. Tier 1 (BITZER+Leybold) and Tier 2 (Hanbell+Busch) component brands carry strong recognition in export markets.

Q4: What are the installation requirements?
A: 380V/50Hz/3P power (breaker ≥300A), foundation load capacity ≥20 tons, evaporative condenser needs circulating water (2-3 m³/day makeup), working clearance ≥2m around equipment, and a ≥25-ton crane for installation.