US20150321678A1 - Heater for the passenger or driver compartment of a train car - Google Patents

Heater for the passenger or driver compartment of a train car Download PDF

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Publication number
US20150321678A1
US20150321678A1 US14/705,444 US201514705444A US2015321678A1 US 20150321678 A1 US20150321678 A1 US 20150321678A1 US 201514705444 A US201514705444 A US 201514705444A US 2015321678 A1 US2015321678 A1 US 2015321678A1
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US
United States
Prior art keywords
heat
condenser
rail car
heat pump
evaporator
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US14/705,444
Inventor
Matthias Weiss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kiepe Electric GmbH Germany
Original Assignee
VOSSLOH KIEPE GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by VOSSLOH KIEPE GmbH filed Critical VOSSLOH KIEPE GmbH
Assigned to VOSSLOH KIEPE GMBH reassignment VOSSLOH KIEPE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEISS, MATTHIAS
Publication of US20150321678A1 publication Critical patent/US20150321678A1/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D27/00—Heating, cooling, ventilating, or air-conditioning
    • B61D27/0036—Means for heating only
    • B61D27/0054—Means for heating only combined with heating means using recuperated energy from other sources, e.g. from the brakes

Definitions

  • the present invention relates to a heating system. More particularly this invention concerns a heater for a passenger or driver compartment of a train car.
  • the object of the present invention is to use the generated waste heat of a railroad car for heating the passenger compartment and/or the driver's cab of the car.
  • a system for heating a compartment of a rail car having a heat-generating engine with a cooling-water system has system has according to the invention a heat pump having a compressor, a condenser, an evaporator, and an expansion valve connected in a closed circuit, and a waste-air fan and ductwork feeding a stream of gas carrying waste heat generated by or in the rail car through the evaporator.
  • waste heat is not applied directly to the stream of air fed into the compartment to cool it, but is used to raise the heat-pump temperature in general.
  • the rail car has a motor with a water-cooling system.
  • the system further has a radiator juxtaposed with the condenser and connected in the water-cooling system of the motor, and a fan in the heat pump blowing air through the radiator and the condenser.
  • This radiator is between the condenser and the fan of the heat pump.
  • FIG. 1 is a schematic diagram of the heating system of this invention.
  • FIG. 2 is a view like FIG. 1 , but with an additional air line connected to the evaporator of the heat pump and through of which the waste heat is vented from the rail car.
  • a heat pump 1 has a compressor 8 that compresses a gaseous heat-exchange fluid and feeds it under high pressure when operating as a heater to an internal heat exchanger 2 acting as a condenser.
  • a fan 6 blows air through the condenser 2 so that heat from the compressed heat-exchange agent is transferred to the passing air that then is fed into a passenger compartment 14 while simultaneously liquefying the heat-exchange fluid.
  • the heat-exchange fluid While still a liquid and pressurized, the heat-exchange fluid passes through an expansion valve 10 that abruptly drops its pressure. This not only results in a temperature reduction of the heat-exchange fluid, but also gasifies it.
  • the gasified and cooled heat-exchange medium then passes through an external heat exchanger 3 acting as evaporator. In the evaporator, the heat-exchange agent is warmed by ambient air passed through it by a fan 7 until it is completely evaporated.
  • a separate heat exchanger or radiator 4 is provided immediately upstream of the internal heat exchanger 2 in the direction of air flow through it from the fan 6 to receive heat therefrom, that is between the upstream side of the condenser 2 and the fan 6 .
  • This radiator 4 is connected in the cooling-water system used to heat the two electric motors 5 of the rail car 15 .
  • the waste heat from the motors 5 at least is therefore also used to heat the condenser 2 and the rail-car compartment.
  • the waste heat is utilized as a result of the integration of the separate cooling water heat exchanger 4 that operates independently from the circuit of the heat pump 1 .
  • standard engine cooling liquids is typically mainly water, are used as the heat-exchange fluid or medium to carry energy.
  • cool fresh or cool mixed air is sucked in by the fan 6 and is passed through both heat exchangers 2 and 4 . If sufficient waste heat from the engine is available, the air can be heated only via the cooling water heat exchanger 4 and can be blown into the passenger compartment 14 .
  • the heat pump 1 and thus the internal heat exchanger 2 acting as condenser can be switched off and therefore remain without function.
  • the cooling water heat exchanger 4 is provided in the feed air flow upstream of the condenser 2 . The reason for this is that, if not enough waste heat from the engine is available, the heat pump 1 is also operated in order to heat the air preheated by the cooling water heat exchanger 4 to the desired temperature before entering the condenser 2 .
  • the waste heat of many subsystems can be used. Apart from the existing waste heat, also a stream 11 of warm air from the compartment 13 of the rail car 14 can be used and its thermal energy can be recovered. Also a combination from both sources is possible.
  • the heat pump 1 takes over the heating of the feed air on its own by the condenser 2 , and the cooling-water heat exchanger 4 remains without function.
  • the cooling water heat exchanger 4 can also be used as an anti-freezing protector for the internal heat exchanger 2 in this case serving as evaporator during air conditioning operation. As a result, the use of an energy-intensive bypass as anti-freezing protection is not necessary.
  • a stream 12 of hot air carrying waste heat is passed through the heat exchanger 3 of the heat pump 1 , so its thermal energy is initially transferred to the heat-exchange medium in the heat pump 1 , as a result of which the temperature level is increased even further.
  • the air ducts that carry the waste heat to the outside heat exchanger 3 during heat-pump operation may be provided with flaps 13 , so that during air conditioning operation, the waste heat does not go to the outside heat exchanger or condenser 3 .
  • energy-intensive anti-freezing protection can also be overridden or greatly reduced when ambient temperatures are low.
  • an electric heater may be provided, e.g. an electrically powered resistive heating coil.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

A system for heating a compartment of a rail car having a heat-generating engine with a cooling-water system has system has a heat pump having a compressor, a condenser, an evaporator, and an expansion valve connected in a closed circuit, and a waste-air fan and ductwork feeding a stream of gas carrying waste heat generated by or in the rail car through the evaporator.

Description

    FIELD OF THE INVENTION
  • The present invention relates to a heating system. More particularly this invention concerns a heater for a passenger or driver compartment of a train car.
    • OBJECT OF THE INVENTION
  • The object of the present invention is to use the generated waste heat of a railroad car for heating the passenger compartment and/or the driver's cab of the car.
    • SUMMARY OF THE INVENTION
  • A system for heating a compartment of a rail car having a heat-generating engine with a cooling-water system has system has according to the invention a heat pump having a compressor, a condenser, an evaporator, and an expansion valve connected in a closed circuit, and a waste-air fan and ductwork feeding a stream of gas carrying waste heat generated by or in the rail car through the evaporator.
  • Thus according to the invention the waste heat is not applied directly to the stream of air fed into the compartment to cool it, but is used to raise the heat-pump temperature in general.
  • Atte the rail car has a motor with a water-cooling system. The system further has a radiator juxtaposed with the condenser and connected in the water-cooling system of the motor, and a fan in the heat pump blowing air through the radiator and the condenser. Thus the heat generated, for example, by the electric motors of the train car is transferred to the air stream blown through the condenser to heat the compartment. This radiator is between the condenser and the fan of the heat pump.
    • BRIEF DESCRIPTION OF THE DRAWING
  • The above and other objects, features, and advantages will become more readily apparent from the following description, reference being made to the accompanying drawing in which:
  • FIG. 1 is a schematic diagram of the heating system of this invention; and
  • FIG. 2 is a view like FIG. 1, but with an additional air line connected to the evaporator of the heat pump and through of which the waste heat is vented from the rail car.
    •  SPECIFIC DESCRIPTION OF THE INVENTION
  • As seen in FIG. 1, a heat pump 1 has a compressor 8 that compresses a gaseous heat-exchange fluid and feeds it under high pressure when operating as a heater to an internal heat exchanger 2 acting as a condenser. A fan 6 blows air through the condenser 2 so that heat from the compressed heat-exchange agent is transferred to the passing air that then is fed into a passenger compartment 14 while simultaneously liquefying the heat-exchange fluid.
  • While still a liquid and pressurized, the heat-exchange fluid passes through an expansion valve 10 that abruptly drops its pressure. This not only results in a temperature reduction of the heat-exchange fluid, but also gasifies it. The gasified and cooled heat-exchange medium then passes through an external heat exchanger 3 acting as evaporator. In the evaporator, the heat-exchange agent is warmed by ambient air passed through it by a fan 7 until it is completely evaporated.
  • A separate heat exchanger or radiator 4 is provided immediately upstream of the internal heat exchanger 2 in the direction of air flow through it from the fan 6 to receive heat therefrom, that is between the upstream side of the condenser 2 and the fan 6. This radiator 4 is connected in the cooling-water system used to heat the two electric motors 5 of the rail car 15. Thus the water pumped through these motors 5 to cool them, as well as around the brakes of the rail car 15 if desired, is pumped through the radiator 4. The waste heat from the motors 5 at least is therefore also used to heat the condenser 2 and the rail-car compartment. The waste heat is utilized as a result of the integration of the separate cooling water heat exchanger 4 that operates independently from the circuit of the heat pump 1. In the motor-cooling circuit, standard engine cooling liquids, is typically mainly water, are used as the heat-exchange fluid or medium to carry energy.
  • In this system, cool fresh or cool mixed air is sucked in by the fan 6 and is passed through both heat exchangers 2 and 4. If sufficient waste heat from the engine is available, the air can be heated only via the cooling water heat exchanger 4 and can be blown into the passenger compartment 14. The heat pump 1 and thus the internal heat exchanger 2 acting as condenser can be switched off and therefore remain without function. The cooling water heat exchanger 4 is provided in the feed air flow upstream of the condenser 2. The reason for this is that, if not enough waste heat from the engine is available, the heat pump 1 is also operated in order to heat the air preheated by the cooling water heat exchanger 4 to the desired temperature before entering the condenser 2.
  • The waste heat of many subsystems (traction converter, auxiliary converter, brake resistor) can be used. Apart from the existing waste heat, also a stream 11 of warm air from the compartment 13 of the rail car 14 can be used and its thermal energy can be recovered. Also a combination from both sources is possible.
  • If no engine waste heat is available at all, the heat pump 1 takes over the heating of the feed air on its own by the condenser 2, and the cooling-water heat exchanger 4 remains without function.
  • In addition, if the operating mode of the heat pump is reversed to air conditioning, the cooling water heat exchanger 4 can also be used as an anti-freezing protector for the internal heat exchanger 2 in this case serving as evaporator during air conditioning operation. As a result, the use of an energy-intensive bypass as anti-freezing protection is not necessary.
  • All of these processes are connected to a common controller 9.
  • In the embodiment according to FIG. 2, in heating mode a stream 12 of hot air carrying waste heat is passed through the heat exchanger 3 of the heat pump 1, so its thermal energy is initially transferred to the heat-exchange medium in the heat pump 1, as a result of which the temperature level is increased even further.
  • If the heat pump 1 is switched to air conditioning operation, the air ducts that carry the waste heat to the outside heat exchanger 3 during heat-pump operation, may be provided with flaps 13, so that during air conditioning operation, the waste heat does not go to the outside heat exchanger or condenser 3.
  • As a function of the thermal energy that can be supplied to the heat pump, energy-intensive anti-freezing protection can also be overridden or greatly reduced when ambient temperatures are low.
  • A large number of modifications are possible within the scope of the invention. For example, as was explained at the beginning, instead of the heat pump 1 or the condenser 2 thereof an electric heater may be provided, e.g. an electrically powered resistive heating coil.

Claims (3)

I claim:
1. A system for heating a compartment of a rail car having a heat-generating engine with a cooling-water system, the system comprising:
a heat pump having a compressor, a condenser, an evaporator, and an expansion valve connected in a closed circuit; and
a waste-air fan and ductwork feeding a stream of gas heated by the rail car through the evaporator.
2. The heating system defined in claim 1, wherein the rail car has a motor with a water-cooling system, the system further comprising:
a radiator juxtaposed with the condenser and connected in the water-cooling system of the motor; and
a fan in the heat pump blowing air through the radiator and the condenser.
3. The heating system defined in claim 2, wherein the radiator is between the condenser and the fan of the heat pump.
US14/705,444 2014-05-08 2015-05-06 Heater for the passenger or driver compartment of a train car Abandoned US20150321678A1 (en)

Applications Claiming Priority (2)

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AT3402014 2014-05-08
ATA340/2014 2014-05-08

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107161119A (en) * 2017-07-04 2017-09-15 薛应东 Train braking heat abstractor
CN107323440A (en) * 2017-07-04 2017-11-07 薛应东 The application of train braking heat abstractor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL3219570T3 (en) * 2016-03-15 2020-12-28 Siemens Mobility Austria Gmbh Electrically operated rail vehicle with air-conditioning and/or heating device

Citations (7)

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Publication number Priority date Publication date Assignee Title
US4264826A (en) * 1977-09-14 1981-04-28 Elmapa Nv Apparatus for generating thermal energy and electrical energy
US5735338A (en) * 1994-02-22 1998-04-07 Smh Management Services Ag Control device for a vehicle air-conditioning system
US20110115223A1 (en) * 2009-06-29 2011-05-19 Lightsail Energy Inc. Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange
US20110167850A1 (en) * 2010-01-11 2011-07-14 Denso Corporation Air conditioner for vehicle
US20130213256A1 (en) * 2011-08-12 2013-08-22 Mcalister Technologies, Llc Mobile transport platforms for producing hydrogen and structural materials, and associated systems and methods
US20130306302A1 (en) * 2011-02-21 2013-11-21 Hitachi Ltd Vehicular air-conditioning system
US20140069123A1 (en) * 2012-09-07 2014-03-13 Hyundai Motor Company Heat pump system for vehicle and method of controlling the same

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Publication number Priority date Publication date Assignee Title
IT1192407B (en) * 1982-04-22 1988-04-13 S I E T T E Soc Impianti Elett HEAT PUMP SYSTEM FOR AIR CONDITIONING OF RAILWAY CARRIAGES FOR PASSENGERS
DE9421231U1 (en) * 1994-08-12 1995-08-03 Hagenuk Fahrzeugklima Gmbh Plant for cooling and heating railroad cars
FR2806038B1 (en) * 2000-03-10 2002-09-06 Valeo Climatisation DEVICE FOR HEATING AND / OR AIR CONDITIONING THE INTERIOR OF A MOTOR VEHICLE
DE10123830A1 (en) * 2001-05-16 2002-11-28 Bosch Gmbh Robert Vehicle air conditioning system uses a heat pump action with the evaporator as the heat source, in the heating mode, for a rapid heating of the interior without loss and heating of the motor to its working temperature
US20030164001A1 (en) * 2002-03-04 2003-09-04 Vouzelaud Franck A. Vehicle having dual loop heating and cooling system
DE102009056027B4 (en) * 2009-09-11 2014-01-16 Audi Ag Vehicle, in particular electric vehicle

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4264826A (en) * 1977-09-14 1981-04-28 Elmapa Nv Apparatus for generating thermal energy and electrical energy
US5735338A (en) * 1994-02-22 1998-04-07 Smh Management Services Ag Control device for a vehicle air-conditioning system
US20110115223A1 (en) * 2009-06-29 2011-05-19 Lightsail Energy Inc. Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange
US20110167850A1 (en) * 2010-01-11 2011-07-14 Denso Corporation Air conditioner for vehicle
US20130306302A1 (en) * 2011-02-21 2013-11-21 Hitachi Ltd Vehicular air-conditioning system
US20130213256A1 (en) * 2011-08-12 2013-08-22 Mcalister Technologies, Llc Mobile transport platforms for producing hydrogen and structural materials, and associated systems and methods
US20140069123A1 (en) * 2012-09-07 2014-03-13 Hyundai Motor Company Heat pump system for vehicle and method of controlling the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107161119A (en) * 2017-07-04 2017-09-15 薛应东 Train braking heat abstractor
CN107323440A (en) * 2017-07-04 2017-11-07 薛应东 The application of train braking heat abstractor

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AS Assignment

Owner name: VOSSLOH KIEPE GMBH, AUSTRIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WEISS, MATTHIAS;REEL/FRAME:035577/0846

Effective date: 20150504

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION