Page 28 - Climate Control News Magazine June 2019
P. 28

Boilers & Heating
The UK Committee on Climate Change is calling for the UK to reach zero emissions by 2050.
To do this British residents have been told to keep heating down to 19°C, to ditch gas boilers, cut meat consumption, shun air travel and take the train.
The government has backed the plan and said it would legislate to make Britain the first major world economy to reduce its carbon footprint to zero.
About 90% of British households have gas boilers, most of them fitted in the last 20 to 30 years.
The government will need to consider policies that encourage householders to move away from gas heating to alternatives such as heat pumps and hydrogen burning radiators.
The UK will join Sweden which is one of the few countries to have a legislated zero emissions target (by 2045).
Two of the heat pumps have cooling capability, re- ducing demand on the refrig- eration units by
1.5%. The key components of the all-electric system are outlined below:
The main 4 MW gas boiler
can be replaced with two 1 MW heat pumps.
These heat pumps use only 29% of the energy of the existing boiler. This impressive efficiency gain is achieved because the heat pumps:
1. Reuse warm air expelled by the condensers of
the refrigeration system at 25-30°C.
2. Deliver steam at 110°C, the temperature re- quired to cook raw food. The current system, like many central boilers, over-heats the steam
to 180°C.
3. Operate with an effective efficiency of 300%
(COP of 3), compared to only 82% for the cur- rent boiler.
The heat pumps' combined heating capacity
of 2 MW is sufficient because the existing 4 MW boiler is twice as large as it needs to be.
The 50 kW gas-fired hot wa- ter boiler can be replaced with a 60 kW heat pump ca- pable of providing heating and cooling simultaneous- ly. This heat pump reuses waste heat from the refrig- eration system, as well as providing 40 kW of cooling
capacity. It operates with a combined coeffi- cient of performance of 4.5.
The oil heater can also be replaced with a 60 kW heat pump capable of providing heating and cooling simultaneously. The heat pump reuses waste heat from the refrigeration system and raises the temperature of the oil to 90°C. An elec- trical resistance heater is then used to boost the temperature up to 240°C.
The gas-fired pizza ovens can be replaced by com- mercially-available infrared ovens. Infrared ovens are faster and three times more efficient.
FROM LEFT: Beyond Zero Emissions CEO, Vanessa Petrie. Lead author of the report, Michael Lord.
Holmak HeatX acquires Klingenburg production assets
has acquired the production assets for the man- ufacturing of counterflow heat exchangers from Klingenburg GmbH.
In future, Klingenburg will focus on manu- facturing rotary heat exchangers in Gladbeck, Germany.
With this takeover, Holmak is adding the en- tire range of aluminium and plastic counterflow heat exchangers previously supplied by Klingen- burg to its product portfolio.
This transaction will increase the produc- tion capacity of Holmak production plants by 50 per cent. The first facilities will begin oper-
ation at Holmak locations within the third quarter of 2019.
Holmak HeatX is the expert in the field of air- to-air heat exchangers. The Netherlands compa- ny develops and produces technologies and products that are based on the counterflow prin- ciple which is highly efficient. Due to the special-
isation and the use of state-of-the-art machines, Holmak HeatX has achieved over the past few years a level of quality that is appreciated by in- ternational customers and set new standards.
Holmak was established in 2007 and has pro- duction facilities in the Netherlands and Mace- donia. The company is part of the CENTROTEC Group which has about 3,500 employees and representatives in more than 65 countries around the world. ✺
This transaction will increase Holmak production by 50 per cent

   26   27   28   29   30