The market for control valves used for commercial cooling,
transportation and for residential air conditioning turns over around
3,7 € (5 US) BILLION per year with an average price of approx.
18 € (25US) per valve unit.
Danfoss, Parker and Emerson deliver thermostatic valves for the most part.
Saginomiya and Fuji-Koki are market leaders when it comes to electronic
expansion valves along with a relatively new and
extremely fast-growing Chinese actors:
Dunan Co with TEX+ Electr and Zhejiang Sanhua Co with DC stepping motors.
Refrigeration industry, turns over around 110€ (*150US) Billion / year.
30M Commercial refrigeration = AC foods cold / freezer systems Ice fabrication dryer heat pumps .
60M Units, small AC unit for the home o apartment market RAC Room AC / PAC (Package exceeding 5 kW)
60M Units = Car AC = M.A.C Mobile Air Conditioning
Next generation heatpumps Next generation Cooling systems Flooded system valve
BXV technology market is designed for Chillers, Heat Pumps, Food-refrigeration systems smart grid solutions with water reservoar or ice-slurry machine, but will also work to provide M.AC for Car and Home Appliance market with better and more efficient technology than what current achieves.
BXV AB is looking for a partner for industrial production of the new cooling components to global cooling and
Professor Dr Horst Kruse Germany
Prof. Henk van der Rhee Nederland
Professor Alberto Cavallini Italy
ASERCOM is the European Association of the Refrigeration Compresso
Back-ground "Everything should be made as simple as possible , but not simpler"
The main factors for heat-transfer and boiling refrigerants is well known since at least 100 years.
Such as .
THE TIME HAS NOW COME FOR TO CHANGE IN THE WAY TO HANDLE ENERGY BY THE USE OF A MUCH BETTER SOLUTION IN AN OLD AND VERY CONSERVATIVE HEAT MOVING SECTOR.
The project starts up with the research to achieve a simplified flooded evaporator systems with standard components, for to achieve the optimized heat transfer for boiling refrigerants and the best performance for condensing refrigerants in next generation cooling systems.
Tests starts up with a control device equipped with a thermostatic valve that was working as servo valve for the float valve (a condensate level control system) This solution was very big and unpractical and without any possibility to use of condensate sub-cooler after the condenser (for 30/70% mixture).
After the discovery of a new signal strategy that is based upon the phase-transformation from liquid to gas-phase this led to a pioneer patent that is based upon the unique new bubble control-signal for flooded evaporator valve control.
Successful field tests starts up with the control for reversing-heat-pump and well-drained condenser with a 4-way valve system ( and naturally) without any superheated gas in the evaporator.
The development of the ejector pump starts up with sub-cooled condensate system with accumulator-heat-exchanger for a maximised effective pump-circulation-systems.
Oil return system development and patent with electronic BXV bubble-control and systems for electronic expansion-valve.
The company receives name protections for Eject cool® / BXV®/ Bubble expansion valve®.
Bubble Expansion Valve BXV Company starts up.
April 2006-IET* Finalist in London October 2006 “Power Energy”.
The technology are evaluated by experts. &n
Next generation heat pumps
Flooded evaporator refrigeration system
The project starts up with the research to achieve a simplified flooded system with standard components, for to achieve the best heat transfer with the lowest temperature difference and best performance for the boiling and condensing of refrigerants.
Tests starts up with control device equipped with thermostatic valve as servo valve for float-valve control system, this solution was unpractical unstable and without the possibility to use of condensate sub-cooler direct after the condenser.
The first tests began with signal-flow from float valve to control a TXV valve.
Discovery of a new exact signal strategy that is based upon the phase-transformation from liquid to gas-phase led forward to two pioneer-patent based upon the unique new control-signal.
Successful field tests starts up with heat-pump with well-drained condenser and 4-way valve without superheated evaporator. The first step of development towards "no need of negativ superheat in evaporator "was therewith completed . Step two was to increase mass flow of refrigerant to the heat exchanger and also achieve better liquid/gas mixture towards 30/70 % and therewith maximising heat transfer between refrigerant and heat-surface. Remove the dry evaporator-systems disadvantages with unnecessary in-effectivity and large temperatur-losses is absolute necessary for to achieve a really effective evaporation of refrigerant with a minimum of temperature-transfer losses.
R&D of ejector-pump starts up together with sub-cooled condensate system and accumulator-heat-exchanger for maximum pump-circulation-system-performance and a effective oil return system.
Bubble Expansion Valve BXV Company starts up and name protection BXV® is granted.
April 2006-IET* Finalist in London
October 2006 “Power Energy”.
November 2006 ASERCOM** Award “Energy efficiency” IKK in Nurnberg "The best innovative energy efficiency for improvement of refrigeration/ air conditioning, a new concept"
Research and construction to adapt equipment to the industry, “couplings adaptors”. first tests with cast armatures foundry in November 07.
Test with ejector-pump geometry with different evaporators and further research for optimum combinations for the automotive and the commercial sector. -
Final-member in the competition "Swedish Environmental innovation "
Finalist in create price “SKAPA” by the inventor Alfred Nobel Foundation 2008
Final report 2010 July after KTH tests and analyses proves 9,5-11,5 better energy-efficiancy for BXV system compared with standard-system dry evaporator even when same compressor and same heat-exchangers is used.
EFFSY2 is a Swedish development programs for energy efficiency of refrigerators
The test results at KTH in July 2009 showed that the mean heat-transfer coefficient for the BXV system increased with 245 % compared with standard TEX dry evaporator-system. Next generation cooling systems is more efficient and is here for stay.
Many investigations have been carried out concerning the difference in COP between use of dry-evaporator system and flooded evaporator systems.
Here is some of them.
Boiling Heat Transfer in VCompact Heat Exchangers T.N. TRAN, M.W. WAMBSGANSS, AND D.M. FRANCE1 1994 San Fransisco (Forced convective boiling mass quality and mass flux)
Flow boiling heat transfer coefficient by Raja Balakrishnan, Mohan Lal Dhasan 2008 page 41 the influence of Vapor quality for the HTC heat transfer coefficcient W/m2K . Liquid subcooling condenser area HTC value compared with condensating values.