Climent Rental
Climent Rental
Case Studies

Process Chilled Water System Hire for Potato Washing

Process Chilled Water System Hire for Jersey Royal Potato’s

Process chilled water hire for potato washing- Jersey Royal approached Climate Rentals for a system to supply 5deg chilled water to their washing process.

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CLIENT

Jersey Royal Potatos

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INDUSTRY

Farming and Vegetable Processing

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SOLUTIONS

Chilled Water for Washing

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TOTAL KW

70kw cooling 20,000lt buffer tank- Heat Exchanger

process chiller water hire- a 70kw chiller and buffer tank installed in Jersey for potato cooling
The primary water chiller and 20,000lt buffer tank installed at Jersey Royal's processing plant.

Process Chilled Water Hire- The Challenge

Jersey Royal’s potatoes whilst harvesting in the summer months can come in at temperatures in excess of 25 Degrees.

 

Importantly, washing in chilled water before packaging cools the potato’s, closing pores and prolongs shelf life. Useful information on potato storage can be found here.

 

Their washers go through cycles with in excess of 2000lt water refills- three such washers are installed on the site. Undoubtedly, its quite a job to keep up with the volumes.

ROYAL POTATOS

The Solution to Process Chilled Water Hire

Although the cooling capacity was not calculated to be high, the large draw-off for washer filling would not be possible at stable supply temperatures without buffering. Hence, we designed a system utilising a large 20,000lt potable water tank for supply to the process.

 

To isolate between the process and primary chilled water systems, plate heat exchangers were specified. In this way the primary circuit could be glycol filled, obviously avoiding contamination.

 

Initially, one 100kw plate heat exchanger was installed, however it was found that the full chiller capacity was not being utilised and another was fitted in series. This flexibility neatly illustrates the advantages of a rented system in so much that alterations can be easily made.

 

Consisting of a 100kw chiller , the primary circuit ran a 20% glycol/ water mix at -2 Degrees. It was found after extensive testing, that this set-point provided optimal usage of the chillers capacity.

 

The secondary pumping sets can be seen above feeding the water to the factory. Constant loops were used with water drawn off to the washers by means of automated valves. Furthermore, staggering the re-filling of the washers ensured a stable temperature within the process chilled water hire system.

Summary

We worked closely with the client through the design and operation of this plant. Day to day operational support and modifications of this plant have ultimately achieved fantastic results. Clearly, renting gives this flexibility.

 

This system has been in operation for four harvests. The cost for installation and operation have been greatly offset by increased shelf life of the product.

process chiller water hire
We also provided additional chilled storage services for seed potato's on this site. A 50kw low temperature AHU can be seen. A great solution for rapid deployment.

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