Low temperature refrigeration is the range of temperatures falling below what is normally regarded as industrial refrigeration, and above the temperatures associated with the field of cryogenics.

This range of temperatures includes applications for food, pharmaceuticals, and chemicals processing. It is also used in the petroleum and chemical industries as laboratory environmental chambers.

The size and type of equipment used varies from small low temperature environmental chambers of only a few horsepower (kW) to large custom-designed and often field-erected systems ranging to several hundred horsepower (kW).

The large units use a combination of one, two or more refrigerants in open cascade arrangements to obtain the desired low temperature.

Voltas has long been a pioneer in process cooling and Low Temperature Refrigeration, with decades of experience in system design and project management, coupled with superior after sales services.

Voltas caters to nearly every industry for their water and brine (sub-zero) chilling applications. These systems use energy efficient compressors (reciprocating / screw) with compatible, high performance condensers and chillers. They can be supplied with the most optimum refrigerant, including ammonia.

Voltas provides:

• Pre-sales consultancy
• Engineered refrigeration system solutions
• Best-in-class products through global sourcing
• Best after sales service

Voltas provides comprehensive system solutions for segments like:

• Pharmaceuticals
• Chemicals, petrochemicals and fertilizers
• Dyestuffs, rubber, plastics and glass
• Bottling and breweries
• Personal care and detergents

Pre-Cooling and Cold Storage systems for fruits and vegetables Post-harvest technology is vital for maintaining the quality of fruits & vegetables. Pre-cooling within the shortest time regulates rate of deterioration of post-harvest produce. Voltas-designed systems offer you the right temperature and humidity required for a variety of fruits and vegetables. Voltas-engineered cold room solutions offer greater export/domestic potential through better value realization, in addition to enhancing the shelf life and quality of the produce, thus ensuring maximum gain for the farmer / exporter.

For dairy applications Voltas Ice Bank systems are a natural choice for milk chilling applications. The process also enhances the quality and shelf life of milk. In addition our systems can handle any storage requirements of dairy by-products such as butter and cheese. The temperature conditions are maintained for each product as desirable.

For ice cream For ice creams, Voltas systems are designed to utilize the optimal blast freezers or hardening chambers, to ensure cooling of the product in the shortest time and storage at the desired temperature levels. Voltas has a large range of systems to cater to any needs of dairy and ice-cream industries. Optional features include a large central plant, modular condensing units, and alternative refrigerants.

For pharmaceuticals Storage of raw materials in the warehouses at 2-8°C temperature. Storage of medicine, vaccines in deep freezers at sub zero temperature.

For flowers and mushrooms Pre-cooling of flowers after picking and proper cold storage prevents drooping, ensures lasting freshness and commands a premium in the domestic/ export market. The right temperature and relative humidity in mushroom-growing areas ensures longer shelf life and better price realisation.

For fisheries, meat and poultry The long Indian coastline offers a variety of opportunities for the fisheries sector. Voltas has a variety of equipment and systems to cater to the needs of this industry such as Flake Ice Plants, Individual Quick Freezers (IQF) and Blast Freezers. Voltas can provide modular/ central plant refrigeration systems for processing of marine life, as well as equipment needed for slaughterhouses, including blast freezers and cold storages.

For food cold rooms Voltas has commissioned a large number of cold rooms of different sizes, for applications such as flight kitchens, restaurants, confectioneries, supermarkets, warehousing, hospitals, off-shore platforms, warships - involving a high degree of precision and meeting stringent specifications. The cold rooms can be offered to suit any temperature requirements for preservation of food.