File originally labelled 'Early Press Reports of 1962 Open Day, NIRD Letters, Charts etc for test work'. The material is comprised of original and photocopied news cuttings, a bibliography, letters from the National Institute for Research in Dairying, and charts concerning Heat Recovery Units. The file includes later annotations by A.S. Cromarty supplying contextual information. Papers relating to a Shinfield open day, letters and research data
File containing typescript and photocopied research reports, including some annotations. There is also an image of a installation of equipment at a farm and some fair copies of test result data. Reports on dairy heat pumps and test results
File originally labelled 'Dairy heat pump and heat recovery units test data and characteristics. Mainly Bulk Tank Water'. The material includes test results for the various stages of the development of a fully integrated and reliable system of heat recovery from bulk milk Tanks. The file contains the results of lab and field work conducted at NIRD (National Institute for Research into Dairying) by ERA Foundation staff. Most items date from 1960-1968, with some later photocopies and notes added by A.S. Cromarty. Papers relating to heat recovery from bulk milk tanks
File of scientific working papers relating to early boiler house Heat Recovery Unit test results, with charts and thermocouple plots. The papers include notes, graphs, diagrams illustrating equipment and the experimental set-up, as well as the ERA log book for the Boiler Test House. Papers relating to early heat recovery unit test results
File of 'raw' scientific data from Heat Recovery Units (HRUs) tested at Church Farm by staff at the National Institute for Research into Dairying. The data is recorded in notes, temperature and pressure charts, which include baseline information taken before the installation of HRUs and tests comparing an HRU Mark 6 with earlier machines, amongst the results of other experiments. The file includes some later notes added by researcher A.S. Cromarty. Test results for a heat recovery system at Church Farm
File originally labelled 'First Dx Tank Tests with basic heat exchanger', containing a photograph of equipment, draft report 'The ERA Dairy Heat Pump Water Heater', graph and charts of data from heat recovery unit experiments conducted at the National Institute for Research into Dairying by ERA staff. There are also some later notes about this work added by A.S. Cromarty. Papers relating to tank tests with basic heat exchanger
File originally labelled 'File - 'Mainly 3/4 hp DHP NIRD tests and performance'. The material consists of research notes, charts, reports dating from 1957-1963 and and a Ministry of Agriculture and Fisheries report on Hall Milk Cooling Plant dating from 1931. The file includes later annotations by A.S. Cromarty. Papers relating to dairy heat pump tests and performance
