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[28 Apr 2016 | 606 read]
Machine building in Bulgaria. TANGRA is expanding on new markets.” Interview for Capital newspaper with Dipl. Eng. July Armianov, owner of TANGRA and member of the board of Bulgarian Chamber of Machine Building

Paris, 1998. International Exhibition on Heating, Ventilation and Air-Conditioning. “An exhibitor at the stall of a Belgian company noticed my interest and asked: “Sir, do you know what this is?”. I replied: “Yes, I do. We have been producing heat exchangers like these in Bulgaria for 10 years”. A little anxious, the exhibitor asked: “Excuse me, sir, where is Bulgaria?”.

Air conditioning, Energy Saving, Heating, Specials, Titles, Ventilation »

[4 Feb 2015 | 1,313 read]
Analysis of the possibilities for energy recovery through recuperation in the ventilation and air conditioning systems.

It seems the discussion for the necessity of energy recovery systems is over not only in Western and Northern European countries, but also in Bulgaria. For the people who made serious effort for convincing and proposing legislative changes in the last 20 years, it is a real success. Today it is rare to see a ventilation or air conditioning project without energy recovery (recuperation or regeneration).

The economic pressure (rise of energy prices) surpassed the legal regulations. Designers and investors reacted more adequately than the legislators.

The next important step is the choice of the right energy recovery system. The right choice means a cost-effective choice that doesn’t compromise the microclimate.

Energy Saving, Heating, News, Specials, Useful in building installations »

[19 Sep 2012 | 20,082 read]
Pellet Boilers TANGRA and the wood biomass market in Bulgaria

Dipl. Eng. Jeliazkov, what is the situation of the heating with biomass in Bulgaria? What are the advantages for the users?

Energy Saving, News, Specials, Useful in building installations, Ventilation »

[19 Sep 2012 | 935 read]
Energy saving ventilation systems (Mechanical Heat Recovery Ventilation) guarantee repayment between 1.5 and 2 years.

Dipl. Eng. Armianov, what are the tendencies in Europe and all over the world in development of energy efficient ventilation systems, mechanical heat recovery ventilation?

Energy Saving, News, Specials, Useful in building installations, Ventilation »

[11 Jun 2012 | 988 read]
The tendencies for increasing energy efficiency in HVAC systems

The energy efficiency in the systems for heating, ventilation and air conditioning became interesting and started to be developed after the energy crisis in 1973.