William Birch Machinery


Case Study – Zetex Technology Park Oldham

Client: Diodes Incorporated (Zetex)

Project: Refurbishment and renewal Clean Room Cooling Systems – 'Free Cooling' Project, to reduce the need for the use of the Chiller based system

Scope: Modification of existing towers, thin-walled stainless steel pipework, carbon steel pipework, plastic pipework, supports and ladderways

Value: £400,000

Zetex wanted to minimise use of energy to reduce costs and lower their Carbon emissions from the Oldham plant by upgrading an existing 'Free Cooling' system. Working closely with the client, planned and executed the job in three stages:

1. Centralisation of both chilled water systems to ensure optimum use.

2. Installation of three plate heat exchangers and the associated pipe work.

3. Modification of 4 existing cooling towers to increase capacity, with fabrication and installation of pipework connecting them to the heat exchangers.

The project was completed and handed over within 6 months with the minimum of disruption to production. Pre-Fabrication of the thin-walled stainless steel pipework was done at J. Fletcher (Engineers) Ltd. Factory in Manchester minimising on-site working.

After several months operation of the system, the following benefits have been realised:

Significant improvements in stability and control of the cooling systems.

Energy Savings of £16,600/month (£200,000/year).

Carbon Dioxide emissions reduced by 1,600,000kg /year

Removal of 1,000kg of HCFC from Chillers

Neil McCallion, Facilities Manager at Diodes said:

“The project to improve the energy efficiency of our clean room air conditioning is a fantastic success story for the company. Even with careful planning, implementing the revised scheme has obviously involved a certain amount of disruption, but our staff and contractors have risen to the challenge ...The cost savings and the benefit to the environment have made the project very worthwhile, and very satisfying.”

J. Fletcher (Engineers) Ltd.

  • Complete Management of complex projects from concept to handover.
  • Manufacture & Installation of Pipework Systems for all sectors from
  • Industrial through to Pharmaceutical.
  • Extensive workshop facilities – Off-site manufacture, on-site assembly.
  • Fast, Efficient & Adaptable Service to end users and contractors.




Home Page Contact Us Site Map