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Should water tanks be a compulsory feature at all cold stores and warehouses? – Lutz Refrigeration responds

Rain water storage systems to supply evaporative cooling towers here in South Africa We are proud to say that Lutz Refrigeration in collaboration with Barpro will be pioneering the use of rain water harvesting to supply the fridge plant at Southern Cold Storage’s new freezer rental storage facilities in Germiston Johannesburg. The multiplex system will be cooling the 20 000m³ freezer room down to -25°C.  Opting for evaporative cooling with Freon is very much against the grain, but by doing this we managed to keep the capital costs in a standard Freon league while competing neck and neck with Ammonia plants on energy efficiency. Initially we will be installing 20m³ of water storage facilities which will offer two days of standby water capacity and will require a 20mm rainfall to be topped up.  Judging from historical rain falls and a bit of field testing we will probably increase that to around 40m³ once the system is up and running. The freezer store rooms are scheduled for commissioning during November this year, we will follow up with photos and feedback once the system is up and running. For more information contact Kevin Walter by email: kevinw@lutzrefrigeration.co.za

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Barpro Storage heading on 20 years!

Over the past few months we have been highlighting some special dates and events for the company starting with the history and where it all began. Today we are a team of 25 including fully trained and experienced technicians, a design & manufacturing team, sales & office support and we have branches in both Cape Town and Johannesburg with a fully operational workshop producing the highest quality spares. We have also extended our product range by supplying Ice Melt and Febset; and are the exclusive distributors in Africa for Delf Coldwear. Working as a team, Barpro Storage boasts over 100 years combined experience – in just the technical and marketing departments; and we are delighted to place this experience and expertise at our customers’ disposal.  

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“Ancient cold storage depot found in Sagalassos”

Recently we heard that a “cold store” had been unearthed at the ancient city of Sagalassos, in Southern Turkey. The large building on 2 levels near the main market place is being excavated by Professor Jeroen Poblome of the Belgian Leuven Catholic University. The city became important during the Hellenistic period after annexation by Alexander the great in 335 BC. It became the “First City”, in Asia Minor during Roman times but was then abandoned. We made contact with Professor Poblome to find out why he thought this building had been a “cold store” in the modern sense of the term as this would make it easily make it the oldest in the world. As far as we were aware, Francis Bacon circa the 1620’s in London was the first known European to conduct experiments on the use of snow for preserving meat.  He used chickens for his experiments and died from a chill shortly afterwards. Clarence Birdseye in the 1920’s introduced quick freezing making frozen food a commercial success after watching the Eskimos. Although the Americans would dispute this, it seems that James Harrison of Geelong, Australia was the first to realise that evaporating gas could make things cold. In his case it was the lead type that he was cleaning with ether at the newspaper which he owned. This was in the 1840’s. Unfortunately Professor Poblome, while somewhat surprised by our interest, confirmed that there was no actual evidence of refrigeration. The rooms in the structure had thick walls and few doors, which would have kept the produce inside relatively cool. However there was no sign of ice or snow being used to keep the rooms cold. He did however mention that the wealthy inhabitants would probably have used ice or snow to cool their wine, and there is written evidence for this, so they too enjoyed their wine cold especially on a hot day. For the full story visit: http://archaeologynewsnetwork.blogspot.no/2015/07/ancient-cold-storage-depot-found-in.html?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed:%20TheArchaeologyNewsNetwork%20(The%20Archaeology%20News%20Network)#.VaUQP2d00id  

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