Source:JASE-W Japanese Smart Energy Products & Technologies

https://www.jase-w.eccj.or.jp/technologies/index.html

P-06

Keywords

Y2

deviceZ2/3

oil/natural gas

E25

general-purpose machinery
TLV Co., Ltd.

Steam Condensate Recovery Pump Requiring No Electricity (Mechanical Pump)
Features
TLV PowerTrap® GP/GT Series● Broad Series Ranging from Small to Large
The lineup features a range of sizes from compact with apumping capacity of 250 kg/h, to the largest at 9,000 kg/h.
The lineup is available as the GP Series with a mechanicalpump only, or as the GT Series with a built-in trapping
mechanism, so an appropriate model can be selectedbased on the size of the steam-using equipment and its
operating conditions, while combining condensate discharge
and condensate pumping to reduce overall costs.
● World's First Mechanical Pump with Built-in Steam
Trap (GT Series)
Because the mechanical pump does not require
electricity to recover condensate, running costs can be
reduced below those of electric pumps. There is also
no fear of cavitation, unlike electric pumps.
● Compact GT5C Equipped with All the Features
The GT5C realizes simple piping and installation, as
well as a 170 mm inlet for a low filling head.
Additionally, the GT5C allows replacement of parts
without disassembling the piping.
● Eliminate Stall
The PowerTrap discharges condensate fromsteam-using processes even with no differential
pressure, allowing it to eliminate stall, preventing water
hammer and insufficient heating.
Basic Concept or Summary
Overview
During manufacturing and building
heating and cooling, large
amounts of steam are used as aheat source. The use of steam
generates condensate.
Because condensate ishigh-temperature when generated
and can be re-used as water, it
has been recovered with electric
pumps. In order to recover thiscondensate without using
electricity, new mechanical pumptechnology has been developed.
Because of the easy installation,
previously unrecovered
condensate can be recovered andreused to conserve energy.

GP/GT Series

Operation
1. The float rises when condensate enters thePowerTrap from the condensate inlet
passing through the inlet check valve.
Gas in the PowerTrap escapes through theexhaust valve.
● For the GT Series, when the float rises thetrap unit opens the valve. While P1 > Pb
(Inlet pressure is greater than back pressure),condensate is discharged through thecondensate outlet piping (trapping function).
● For the GP Series, or for the GT Series when
P1 ≤ Pb, condensate is not discharged andcollects in the body.
2. When the float reaches its highest position,
the push rod connected to the snap-action
unit snaps up, closing the exhaust valve andopening the motive medium inlet valve. The
motive medium increases the pressure inside
the body above the back pressure, closing
the inlet check valve and pushing thecondensate in the body out through theoutlet check valve into the recovery piping.
3. As the condensate is discharged from the body, the float lowers with the levelof the condensate. Once the float reaches its lowest point, the push rod
connected to the snap-action unit snaps down opening the exhaust valve
and closing the motive medium intake valve, returning to step 1.

Effects or Remarks

P-06

For heating processes and air conditioning which use steam forindirect heating, only about 70 % of the heat energy in the steam
is put to use. The remaining 30 % or so of heat energy isdischarged through the steam traps and is usually released tothe atmosphere. However, the condensate generated fromsteam-using processes is still hot, and if that heat is put to use
boiler fuel can be reduced by 20 – 30 %. (See the right graph)
For instance, if 1 ton of 100 ºC condensate is recovered every
hour, the amount of heat recovered it worth 1.6 million yen, withan equivalent reduction in CO2 emissions of approximately 95 t-CO2/year (operating 4,000 hours/year, with heat at 5 yen/1000
kilocalories). If that condensate can be recovered at 150 ºC, theyearly value increases to 2.6 million yen.
GT series

GP series○－Std. Pump Discharge Cap.

approx. 0.25 － 8 t/happrox. 0.26 － 9 t/hMaximum Discharge Capacity (Trap)

approx.1 － 40 t/h－Connection (Inlet / Outlet)

Screwed , Flanged

Screwed , Flanged

Model
Built-in Steam Trap

Body Material

FC250 / WCB / CF8M

Inlet (mm)25 － 80

Outlet (mm)25 － 50

Max. Oper. Press. PMO (MPaG)

0.5 / 1.05 / 1.4

Size

Max. Oper. Temp. TMO (°C)

185 / 220

Filling Head (mm)Minimum: 155 － 710

Standard: 300 － 860

Motive Medium

Saturated Steam

Saturated Steam, Compressed Air, Nitrogen

Pumped Medium

Steam Condensate

Steam Condensate, Water

See TLV product specification data sheet (SDS) for detailes.

Installation in Practice or Schedule
Domestic ・ Introduced to large steam-using plants such as oil refineries, chemical, steel, and food.
Additionally, many are used by buildings, hotels, etc. in air conditioning systems.
・ One example is for air conditioning equipment at a pharmaceutical company. By installingPowerTraps, 6 million yen per year could be saved with an ROI of 2.4 years by recovering
condensate that was previously unrecoverable due to poor return on investment.
Overseas ・ Introduced to large steam-using plants worldwide such as oil refineries, chemical, steel,and food. Additionally, many are used by buildings, hotels, etc. in air conditioning systems.
Overseas subsidiaries in 12 countries and more than 100 international distributors in over 50
countries

Contact:

TLV International, Inc., CES Center
881 Nagasuna, Noguchi, Kakogawa, Hyogo 675-8511, JAPANPlease contact us through our website: https://www.tlv.com/global/TI/