Remeha boilers keep it warm at historic Pembroke College, Cambridge

Pembroke College, one of Cambridge University’s oldest colleges dating back to the 14th century, has upgraded its heating system with four Remeha Gas 310 Eco Pro 7-section condensing boilers supplied with plate heat exchangers to provide high-performance, energy-efficient 21st century heating.

The central plant room at Pembroke College provides heating and hot water to nearly all the buildings on the main College site, from its student accommodation that houses more than 200 students, to its famous Chapel, the first completed work by Sir Christopher Wren. When the existing boiler provision proved inadequate to the College’s current heat requirements, the Bursar of Pembroke was keen to improve the reliability of the heating system and reduce running costs.

“Prior to this project, it was a case of checking each morning to see if one or indeed any of the boilers were running,” said Robert Griggs, Buildings Manager for Pembroke. “There was very little effective control of heating distribution and insufficient output to provide and sustain comfortable room temperatures on the coldest of winter nights.”

Robert Reeves at The Energy Practice Ltd, who provided mechanical and electrical design consultancy on the project, specified the Remeha replacement boilers due to their proven reliability, high output and compact dimensions.

“We specified four Remeha Gas 310 Eco Pro 7-section boilers providing a total output of 1,580kW,” said Robert Reeves. “With plans to upgrade the heat emitters, the Remeha boilers achieve a reliable, compact solution to meet both future as well as current demand at Pembroke College’s main site.”

Size was a second important consideration, as Robert Reeves explained: “Our challenge was to double the heat output for Pembroke College but within the same space occupied by the original pressure jet boilers. Taking into account the reliability we have previously experienced with these boilers, the required heat output and the small dimensions of the plant room, we felt the Remeha Gas 310 Eco Pro boilers were the most appropriate boilers for the application.”

The smaller, lighter footprint of the Remeha Gas 310 Eco Pro also helped overcome the problem of awkward access to the plant room. Contractors R F Blounts lowered the four condensing boilers through a hatch into the basement plant room before wheeling them into place. Newly-fitted plate heat exchangers protect the new boilers from any debris in the existing heating system.

Robert Griggs continued: “The new boilers, combined with plate heat exchangers and a new distribution system in the completely remodelled plant room, provide reliability, capacity, efficiency and, importantly, comfort for our fellows, students and staff.”

With the new Remeha boilers all fully operational, Pembroke College can anticipate more reliable, efficient heating throughout the buildings on its main site and a lower carbon footprint, in keeping with its wider environmental commitments.

The Remeha Gas 310 Eco Pro range offers outputs from 51 to 651kW with exceptional, higher-than-average annual efficiencies of up to 98.3% GCV together with excellent ultra-low NOx emissions as low as 26mg/kWh at 0% O2 and minimum CO2 emissions. The pre-mix burner (NG) with its gas/air ratio control system ensures clean operation and smooth, trouble-free operation. The Remeha Gas 310 Eco Pro has been designed for versatility and flexibility. Lightweight and extremely compact, it can be installed side-to-side to offer increased installation design flexibility and is ideal for modular configuration. Offering both conventional and room-sealed flue system capability, the boiler can be sited almost anywhere within a building.

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