For the scenario of villas, which are independent residential properties, air-source heat pumps can meet their diversified and personalized energy needs. Below is a general solution that combines comfort, energy efficiency, and intelligence:
Typical Application Scenarios of Air-Source Heat Pumps in Villas
1. Whole-House Heating and Cooling System Needs:
Coverage Area: 200-500㎡
Needs: Simultaneous satisfaction of winter heating (floor heating/radiators) and summer cooling (central air conditioning)
Pain Points:
Traditional split air conditioners have low heating efficiency.
Gas wall-hung boilers rely on fossil fuels and have high operating costs.
Adaptation Solutions:
Air-source heat pump dual-supply (cooling + floor heating) or triple-supply (including hot water) systems.
2. 24-Hour Domestic Hot Water Needs:
Multi-point Constant Temperature Water Supply: Bathrooms, kitchens, bathtubs, etc.
Average Daily Usage: 300-800 liters
Pain Points:
Electric water heaters have high energy consumption.
Solar water heaters are weather-dependent and occupy roof space.
Adaptation Solutions:
Heat pump water heaters (standalone or coupled with the air conditioning system).
3. Pool Constant Temperature Needs:
Maintaining Pool Water Temperature: 26-28℃ (additional heating of 10-15℃ required in winter)
Pain Points:
Gas heating costs are extremely high (about 15 yuan/m³/℃).
Electric heating has low efficiency.
Adaptation Solutions:
Dedicated pool heat pumps (titanium tube evaporator for corrosion resistance).
4. Roof Snow Melting/Floor Heating Freeze Protection Needs:
For Villas in Northern Regions: Roof snow melting, courtyard road ice prevention
Pain Points:
Electric heating tapes consume a lot of energy (about 30W/m).
Manual cleaning is inefficient.
Adaptation Solutions:
Low-temperature heat pumps driving floor heating pipes (energy consumption reduced by 60%).
Universal Solution Design System Architecture (Taking a 400㎡ Luxury Villa as an Example)
[Heat Pump Main Unit]
├─ [Low-Temperature Variable Frequency Dual-Supply Unit] 1×25kW (Main Energy Center, for Air Conditioning + Floor Heating)
├─ [Triple-Supply Heat Pump] 1×10kW (Backup Heat Source + Hot Water Supply)
└─ [Pool Heat Pump] 1×15kW (Independent Circulation System)
↓
[Distribution System]
├─ [Hydraulic Module] (Integrated with water pumps, expansion tanks, filters, and differential pressure bypass control)
├─ [Floor Heating Manifold] (With room temperature-linked solenoid valves for temperature control by room)
└─ [Hot Water Circulation Pipe Network] (Stainless steel insulated pipes, with a circulation temperature difference ≤5℃)
↓
[End System]
├─ [Capillary Tube Radiant System] (Uniform temperature control in living rooms/bedrooms)
├─ [Kitchen Dedicated Hot Water Point] (Instant hot water, with hot water available within seconds)
└─ [Pool Titanium Coil Heat Exchanger] (Closed-loop circulation with the main unit)
Optimization of Operation Strategies: Multi-mode intelligent switching
Daily Mode: Dual-supply unit meets basic loads, triple-supply unit supplements hot water.
Banquet Mode: Automatically starts the backup heat pump when multiple hot water points are detected to be on simultaneously.
Away Mode: Turns off air conditioning terminals, maintains floor heating freeze protection temperature (8-10℃).
Energy Priority Management:
Prioritize the use of photovoltaic power to drive heat pumps, with surplus electricity stored in energy storage batteries.
Gas wall-hung boilers are only used as emergency heat sources below -20℃.
Water Circuit Self-Balancing Design:
Floor heating systems use dynamic differential pressure balancing valves to eliminate hydraulic imbalances between different floors.
Hot water systems are equipped with constant pressure variable frequency pumps to ensure stable shower water pressure on the top floor.
Economic and Comfort Analysis
Cost Comparison (Taking a 400㎡ Villa as an Example)
Comfort Improvement:
Uniform floor heating temperature in winter (22-24℃), without the dryness of air conditioning.
Instant hot water for domestic use, with a waiting time of less than 5 seconds.
Indoor temperature fluctuation ≤±0.5℃, humidity control accuracy ±5%.
Implementation Key Points
Design Phase: Consider additional loads from vaulted living rooms and large glass curtain walls for heat load calculations.
Pool Heat Pump: Ensure a distance of more than 3m from the main building to avoid chlorine corrosion.
Installation Standards: The base of the main unit should be 20cm above the ground, with a 1m maintenance space reserved around it.
Floor Heating Pipe Spacing: Increase to 15cm in solid wood flooring areas.
Smart Interconnection: Connect to smart home systems (e.g., KNX, Zigbee) for voice/APP control, with automatic fault notifications sent to the property management platform.
Typical Case
An Ecological Villa in Sheshan, Shanghai (450㎡, including pool/floor heating/photovoltaics)
Configuration: Low-temperature dual-supply unit (DAIKIN Altherma 25kW), photovoltaic direct-drive heat pump (5kW PV + 10kWh energy storage), intelligent hydraulic module (Grundfos MAGNA3 variable frequency pump).
Achievements: Annual comprehensive energy efficiency ratio (SPF) reached 4.8, saving 58% of energy compared to the gas scheme, with hot water waiting time shortened to 3 seconds.
Summary
Villa heat pump solutions should focus on "multi-functional integration, precise room-by-room control, and energy coupling":
Use low-temperature dual-supply units to integrate air conditioning and floor heating, avoiding repeated investment in multiple systems.
Recover waste heat from air conditioning to supply hot water through triple-supply technology, improving overall energy efficiency by over 30%.
Combine photovoltaics and energy storage to build a home microgrid, reducing dependence on municipal energy.
With intelligent control systems, the villa's energy system can achieve a "zero-carbon" transformation while ensuring comfort.
