Storage Calofiers

When domestic hot water is required in volume, the GMS range of storage calorifiers offers an ideal solution. Stored water is heated indirectly by a primary medium (via an internal u-tube battery). Alternatively, electric immersion heaters offer a clean and efficient primary heat source. Factors affecting the choice of storage calorifiers are:-

• Cost - Storage calorifiers are often the most economical water heating solution.
• Low Primary Power Requirement - The stored hot water meets high peak demands with relatively low primary power, keeping the primary supply capital costs lower than in instantaneous or semi-storage systems.
• Economical Temperature Control - Simple on/off temperature control is often all that is required.
• Reliability - Storage calorifiers are robust and uncomplicated, giving excellent reliability and availability.
• Space - An instantaneous water heater may be more compact than a storage calorifier, but requires a larger primary heat source, negating some of the space saving.
  
• Heat Loss - Correct insulation of the calorifier results in low heat loss. Compared to instantaneous heaters the low, steady primary heat requirement reduces inefficient boiler cycling. Primary pipework is smaller and loses less heat.

GMS manufacture calorifiers using the following standard materials:
Solid Copper: Type CS , Copper-Lined Steel: Type CL , Galvanised Steel: Type GS , Stainless Steel: Type SS & Glass/Polymer Lined Steel: Type PL

Semi Storage

The 'Thermax' Range of Semi-Storage Calorifiers are designed to meet high DHWS (domestic hot water service) demands on a compact and cost effective way. Hot water is available within a few minutes of a cold start, temperature control is excellent and - thanks to the built-in thermal store - the primary input power requirement is much lower than for instantaneous water heaters.

Why choose a Thermax unit?

• A compact design.
• A flexible water heater design to suit any demand.
• Utilises steam, LTHW or MTHW primary medium.
• Gives virtually instantaneous hot water.
• Optimises peak input power.

The Thermax unit pumps cold water from the bottom of the thermal storage vessel through a powerful heat exchanger. This heats the water to the set temperature. The heated water flows over a temperature sensor at the heat exchanger outlet. This adjusts primary fluid flowrate via a proportional valve to maintain temperature. After this the heated water is returned to the vessel near the top. The vessel contains special baffles to prevent excessive stirring. The hot water now at the top of the vessel can be drawn off for use. Peaks of demand, which exceed the heat exchanger output, are met from the hot water stored in the vessel. The vessel is then re-charged with hot water during the subsequent lower demand. When demand is low the water in the vessel is heated from top to bottom, preventing growth of legionella bacteria.

Non-Storage

GMS manufacture a range of non-storage calorifiers for a range of applications. Our standard calorifiers use steam, water & electric as the primary, heating medium. We can supply steam/water calorifiers as a plain calorifier or as a package complete with all necessary controls and condensate removal equipment. Please contact us for further information.

Our standard range includes:

• The 'Atlantic' range of steam/water heat exchange equipment
• The 'Pacific' range of water/water heat exchanger equipment
• The 'EFH' range of electric flow heaters

We can also supply bespoke products to suit many special applications. Please contact our sales office for further information.