Air to Water Low Temperature Heat Pump
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Air to Water Low Temperature Heat Pump

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Air to Water Low Temperature Heat Pump

Air to Water Low Temperature Heat Pump

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    Air to Water Low Temperature Heat Pump Air to Water Low Temperature Heat Pump Presentation Transcript

    • Air to Water Heat PumpIntroduction
    • Air to Water Heat Pump
      Split System
      Monobloc
      DHW
      Solar Thermal
    • Introduce an electric hydronic system that heats and cools the space, and can supply domestic hot water.Eco-efficient air-to-water heat pump hydronic system.Introduced in Europe in 2005, a unique combination using existing technology.
    • Table of Contents
      • 1. Introduction to ATW Heat Pump
      • 2. System Layout and Applications
      • 3. Balance Point Strategies
      • 4. Programming for Energy Savings
    • Drivers to a Changing Heating Market
      The Heating Market is Changing
      Energy prices : ever rising prices of fossil fuels due to increasing demand and reduced availability
      Ecological concern : efforts to reduce emmissions of green house gases and energy consumption
      Changing legislations, incentives : to support the drive towards major changes in energy consumption habits for the purpose of achieving ecological targets in an effort to slow down, stop or even reverse climate change.
    • WithDAIKIN ALTHERMA product, DAIKIN has entered the true HEATING market
      <Initial U.S.Target market>
      In 2006 DAIKIN entered the EU-heating market using an air to water heatpump
      In 2009, Daikin AC will launch this technology in the U.S
      Hydronic Heat Common
      Hybrid Altherma or G/F
      Rebate Opportunities
      Heat Pump acceptable
      Cheap Electricity
      Rebate Opportunities
      NW
      Cold Region
      1.Savings on running costs by high COP
      compared with Gas/Oil boilers
      2. Friendly for the environment
      3.Differentiation with cooling function against boilers
      NE
      NW
      Product differention
      Water heating market
      Heat source market:
      DAIKIN original strategy:
      1
      Savings on running costs
      30 to 50°C86 to 122°F
      Enter the LOW temperature heating market by development of an HFC-based H/P
      Mainly new houses
      -40% compared to fuel boilers-25% compared to gas boilers
      Low temp:
      2009
      2
      Floor heating
      Environmently friendly
      60 % savings on CO2-emissions
      Capitalize on initial product scope to strengthen opportunity in wider heat pump market with HT solutions
      Easy installation
      3
      50 to 80°C122 to 176°F
      Enter the HIGH temperature heating market by using a Cascade System (R-410A to R-134). Orignally a CO2-based H/P was going to be used. Issues with high operating pressures ruled this option out at this time.
      Mainly refurbishment
      High Temp.:
      • No need for chimney- No need for fuel storage tank- No need for connection to gas supply
      2010
      Radiator
    • Selection conditions
       
      Typical conditions for the heating LWT are:
       
      86 to 95°F (at design conditions) for floor heating
      86 to 113°F (at design conditions) for fan coil units and
      104 to 122°F (at design conditions) for low temperature radiators
       
      Typical conditions for cooling LWT are:
       
      41 to 71°F (at design conditions) for fan coil unit
       
    • Why an ATW Heat Pump
      “All-thermal” functions embedded: heating, domestic hot water, cooling = all year comfort
      Or
      “Alternative thermal” system, friendly for the environment, using renewable energy sources
      3 functions:
      Unique concept in the EU market
      cooling
      Domestic hot water
      heating
      Main product functions
      TOTAL CONCEPT FOR CLIMATE CONTROL IN RESIDENTIAL APPLICATIONS
    • Benefits for the End-User
      General
      Only one energy supply needed (single invoice)
      Comfortable heating system
      Compared to gas/oil
      No risk for gas or oil leaks, no risk for CO contamination
      Improved installation possibilities (no combustion ventilation, no combustion exhaust gas evacuation, no oil storage)
      Possibility of cooling
      Compared to direct electrical heating
      Efficiency 2 to 4 times higher
      More capacity available for same power input
      Compared to geothermal heat pumps
      No expensive drilling or excavation works, small installation footprint outdoors
    • ATW Heat Pump Overview
    • Daikin Altherma™ - THE 3 IN 1 GUARANTEE – FOR ABSOLUTE COMFORT
      Daikin Altherma™ is a unigue system that heats, produces domestic hot water and can even cool spaces. Altherma™ offers maximum year round comfort.
      The air/water heat pump is an interesting alternative for classic gas or fuel oil heating that offer unique benefits:
      • Uses renewable energy sources (extracts heat from outside air)
      • Delivers considerable savings in energy costs
      • Delivers a significant contribution in the fight against CO2 emissions
      • Provide heating, cooling and domestic hot water
      User Interface
      Room Thermostat
      Outdoor Heat Pump
      Indoor Unit (Hydro Box)
      Solar Kit
      Domestic Hot Water Tank
    • Daikin Altherma Split Type Overview
      Ideal concept for a new house
      HYBRID system in combination with ALTHERMA
      120 to 180 m²1292 to 1938 ft²
      Size of house:
      Domestic hot water tank
      Stainless steel3 sizes: 150, 200, 300 l(40, 53, 79 gallon)
      HE / CO
      Solar Kit
      HE / (CO) (*)
      (*) floor cooling has limited capacity (approx 20 W/m²)
      Solar kit = interface between solar panel and Altherma domestic hot water tank
      Floor heating
      Water temp: 30~35°C~40 86~95°F~104
      Hydro-Box
      Domestic Hot Water Tank
      Outdoor Unit
      blank
    • Daikin Altherma LT Monobloc Overview
      Solar collectors
      Room thermostat
      Fan coil unit
      LT radiator
      Under floor heating
      Outdoor unit
      Domestic hot water tank
    • Comparison LT Split – LT Monobloc
    • Heating mode
      Cooling mode
      T ambient
      T ambient
      77°F/25°C
      109°F/43°C
      -4°F/-20°C
      59°F/15°C
      Hydrobox Leaving Water Temperature
      77°F/25°C
      122°F/50°C
      45°F/7°C
      68°F/20°C
      Sanitary mode
      T ambient
      Booster
      heater
      109°F/43°C
      95°F/35°C
      -4°F/-20°C
      77°F/25°C
      194°F/90°C
      122°F/50°C
      Hydrobox Leaving Water Temperature
      Sanitary Tank Outlet Temperature
      Operating range
    • Booster
      Heater
      Sensor
      Heat Exchanger
      Domestic hot water tank design
      DHW tank maximizes
      energy savings &
      warm water capacity
      Optimal placement of:
      Heat exchanger,
      Temperature sensor &
      Booster heater
      Control strategy
      Next slide
      Leaving water from Heat pump
      Return water
    • Domestic hot water control strategy
      DHW priority setting can be adjusted
      Powerful DHW mode : both heat pump and booster heater are in operation for quick hot water preparation
      Booster heater control :
      Adjustable delay timer : allow heat pump to heat up the water as high as possible (118.4 -122°F) before operating the booster heater
      Booster heater priority : simultaneous operation of back-up heater and booster heater can be disabled, booster heater has priority
      Scheduled timer : booster heater operation can be controlled by scheduled timer
      Comfort settings :
      Max DHW running time : maximum continuous operation in DHW mode (to avoid cooldown of rooms)
      Anti-recycling time : minimum time between two successive DHW operations (to allow recovery of temperature in heated rooms)
      Thermal disinfection mode
      Heat up the tank daily / weekly to avoid bacteria infection (default setting 158°F)
    • Domestic hot water recovery times
      Static Recovery Times (47°F/8°C outdoor ambient)
    • ATW Heat Pump Technology
    • Heat generation by heat pumps
      No heat “generation”, only move heat from the outside to the inside.
    • Expansion valve
      Condenser
      Evaporator
      Comp
      Electric power
      Heat pump principle
    • Heat Pump Concept
      Capture heat from the outside air and transfer it to the inside of the building.
      Example:
      48,000 BTU heat pump will use 27.97 amps @ full load
      ERLQ048/ EKHBX054
      Producing 50,700 BTU of heat @ 54ºF/12°C outdoor w/ 113° LWC
      ( 44.8 kBTU at 45ºF/7°C outdoors)
      ( ( 31.6 kBTU at 19ºF/-7°C outdoors) 65.8% of Rated Capacity
      Electric heat of 51,182 BTU or a 15kW heat strip
      @ 230 volts would consume 65 amps
      Electric Heat uses 2.33 times the power
      Which is more efficient,
      Creating the heat energy or just bring it inside???
      CO2 emissions - 0
      No heat “generation”, only move heat from the outside to the inside.
    • Compressor Technology
      DC – Digitally Commutated
      Inverter Drive
    • Optimized Sine Wave
      • Advantage:
      • Smoother motor rotation
      • Improved motor efficiency
      Inverter output current wave
      Rough wave
      Smooth wave
    • The DC-motor Principles
      • Stator = Coil
      • Rotor = Permanent Magnets
      Neodymium
      Ferrite
      Commutation by means of
      Inverter AC Wave Input
    • The DC-motor Principles
      Reluctance brushless DC compressor
      DC = Digitally commutated
      Rotating stator field
      Curved
      Iron Rotor
      Neodymium
      Magnets
      Electrical field in the
      stator not the rotor
      no need for brushes
    • +V
      T(sec)
      -V
      60 Hz Frequency
      Inverter Box
      Inverter Drive System
      • The inverter control adjusts the supply frequency
      • Thus the rotational speed of the compressor is controlled
      • Exactly the right amount of refrigerant gas is pumped to meet the cooling requirements
      Multi-Step Principle
      +V
      Load
      T(sec)
      17capacity steps VRV-s
      22 capacity steps on WC
      37 capacity steps VRV
      -V
      Frequency 52 to 210 (Hz)
    • Multiple Step Control
      • Standard HVAC system
      • 1 to 2 stages of capacity
      • Uses mechanical unloading techniques
      • VRV uses inverter technology
      • Electronic inverter varies compressor rotational speed in steps
      Unloader, Two Speed or
      Two Compressors
      Multi-Step Control Principle
      Load
      Load
      50%
      100%
      52~210Hz
      Compressor capacity
      Applied frequency
    • Other Inverter Benefits
      • Very low startup amperage
      • No locked rotor amps
      • No stress on windings or compressor frame
      • No “light flicker”
      • Lubrication of bearings increases before speed increases
      • System pressures increase gradually reducing noise and stress on piping
      • Quiet compressor startup
      • Idea for backup generator and photo voltaic solar applications
    • Inrush Current
      Non
      Inverter
      5 to 6 times RLA
      132 amps
      Rush Current
      Current
      22 amps
      Running
      Current
      0 amps
      Time
      When starting up, Inverter raises frequency smoothly, eliminating the rush current.
      31.9 amps ?
      Current
      No heat “generation”, only move heat from the outside to the inside.
      Running
      Current
      4 amps
      Time
      0 amps
      Altherma Inverter
    • Balance Point Strategies
      Mono-Valent
      Mono-Energetic
      Bi-Valent
    • System Applications
      Ideal for New Construction
      Ideal for New Construction
      Mono-Energetic
      Mono-Valent
      Best balance between investment cost and running cost, results in lowest Lifecycle Cost
      100% Heat pump coverage : selection of bigger capacity and higher investment cost heat pump
    • System Applications
      Ideal for Refurbishment/Upgrade
      Bi-Valent
      Space Heating with an Auxiliary Boiler
      Space heating application by either the Daikin Altherma Hydrobox or by an Auxiliary boiler connected in the system.
      An auxiliary contact decides whether the Hydrobox or the boiler will operate.
      The auxiliary contact can be an outdoor temperature thermostat, an electricity tariff contact, a manually operated contact etc.
      Domestic Hot Water in such an application is always produced by the System Tank connected to the Hydrobox, including when the boiler is in operation for space heating.
    • ATW Heat Pump Application /Installation Requirements
    • Installation Requirements
      Distance between outdoor and hydro-box (Outdoor & Monobloc).
      Distances related to water pipe installation (Outdoor & Monobloc).
      Refrigerant piping (Outdoor).
      Attention points on the water circuit.
      Installation Examples
    • *Standard minimum 16.4 ft. With factory charge
      10 ft if recharging outdoor is performed.
      To guarantee a minimum temperature difference between outlet PHE and inlet tank
      To avoid big temperature change when switching from sanitary to cooling ( hot draft)
      Installation Requirements
      ERLQ036, 048, 054BAVJU (Outdoor)
      246 ft
      10 ft*
      98.4 ft
      10 ft
      32.8 ft
    • Installation Requirements
      10 ft
      32.8 ft
      39.4 ft in length.
      To avoid big temperature change when switching from DHW to cooling ( hot draft)
      To guarantee a minimum temperature difference between outlet PHE and inlet DHW tank
    • Installation Requirements
      Required Oil Trap ERLQ036, 048, 054BAVJU
      Since there is a possibility of oil held inside the riser piping flowing back into the compressor when stopped and causing liquid compression phenomenon.
      Install trap at each difference in height of 32.8 ft is required.
      • Trap installation spacing.
      A Outdoor unit
      B Indoor unit
      C Gas piping
      D Liquid piping
      E Oil trap
      H Install trap at each difference in height of 10 m
      Oil trap is not necessary when the outdoor unit is installed in a higher position than the indoor unit.
      Caution: Requirements for a trap
    • Refrigerant Piping Size & Additional Refrigerant Charging
      Installation Requirements
      ERLQ036, 048, 054BAVJU ~ EKHBH/EKHBX054BA3/6VJU
    • Installation Requirements
      Water Circuit
      • Installation of shut-off valves at inlet and outlet of hydro-box.
      • Installation of drain valves at the lowest places
      • Air vents at the highest level
      • All field piping must withstand the water pressure
      Water volume
      ERLQ036, 048, 054AVJU + EKHB/EKHX054BA3/6VJU EDLQ/EBLW036,048,054A6VJU
      • Minimum water volume
      • Heating only model: 5.3 gals.
      • Heating / Cooling model: 5.3 gals.
    • ATW Heat Pump Interface Control
    • Remote Controller
      Booster heater symbol
      Back up heater symbol
      Heating/Cooling on/off
      Pump on symbol
      Space heating operation
      Space cooling operation
      Compressor on symbol
      Silent mode operation
      Weather depending control
      DHW heating operation
      Temperature setpoint adjusment
      DHW water temperature setpoint adjusment
      Controller reference
    • Questions?
      Thank you for your attention