About this presentation

related to ATMOsphere Europe 2011
published on 12 October 2011
6 MB

This case study presents results from high pressure heat pump solution using ammonia and screw compressors up to 90°C for reducing the Nestle Halifax factories refrigeration and heating energy demands. This enabled Star to comfortably take heat from the 0°C process glycol at -5°C and lift it to 60°C in one stage for heating. Nestle can save an estimated £143,000pa in heating costs, and 119,100kg in carbon emissions by using a Star Neatpump. Despite the new refrigeration plant providing both heating and cooling, it consumes £120,000 less electricity per annum than the previous cooling only plant.

About the speaker(s)

Dave Pearson

 

In 2004, as a Director at Starfrost Spiral freezers, Dave Pearson's work was commenced to use ammonia in a packaged LPR system to minimise the charge and utilise reverse cycle defrost. This is now the standard offering for spiral freezers and is achieved without any control valves inside the factory or freezer. Recently he was involved in the supply of the world’s first Transcritical CO₂ system for a spiral freezer.

As Director of Innovation for Star Refrigeration things have “hotted up” for Pearson as he has spent much of the last 3 years working to maximise the opportunity for ammonia heatpumps in district heating and process applications using “single screw” compressors.

Pearson is a dual graduate of the University of Strathclyde, first in Mechanical Engineering then from the MBA course. These support his passion that “Ideas” are nothing until they are implemented and earn profit- that is real Innovation. Natural refrigerants are a key part of proven and viable operational and financial improvements in most businesses.