Application: market environment.

Pioneering system design for small businesses.

  • energy transition places electrification and combined technologies at the fore (80–95 % reduction in greenhouse gases by 2050 compared to 1990)
  • attractive fuel cell market incentives via KfW standards
  • comfortable indoor climate guaranteed

Application: project.

Pioneering system design for small businesses.

A heating contractor as an example of a small business.

The business runs on natural gas and has a continuously high demand for electricity. The aim is to reduce energy costs, introduce air conditioning and provide a comfortable indoor climate by means of a future proof retrofit. Fuel cell technology is the ideal solution for small businesses and residential buildings – where, against a backdrop of high power consumption, independence as well as efficiency and environmental awareness are of equal concern.

In addition to the working spaces, the business has a residential building connected to it and comprises 375 m² in total.

 

Energy demand of the heating contractor:

  • heating demand: approx. 46,000 kWh p.a.
  • hot water demand: approx. 4,000 kWh p.a.
  • power consumption: approx. 17,000 kWh p.a.

Application: requirements.

Pioneering system design for small businesses.

Requirements:

  • use of pioneering technologies for supplying heat and power, perhaps electric mobility
  • reducing energy bills
  • comfortable indoor climate

System: standard system.

Logamax plus GB192i gas condensing boiler

  • high energy efficiency of 94 % with Logamatic RC310 system programming unit
  • Buderus Titanium Line design
  • compact design with compatible connections

System: standard system.

Logalux ESM 300 stainless steel DHW tank

  • dual mode DHW tank for connecting a boiler and retrofitting other heat sources (for example a fuel cell)
  • durable construction with pressure and corrosion-resistant DURA plus stainless steel
  • low heat losses due to high grade thermal insulation

System: standard system.

E3 heating system protection.

  • desludging: Logafix magnetite separator keeps heating water clean
  • softening: lime scale and corrosion-enhancing salts are removed from the fill water, achieving low salt content water to VDI 2035
  • deaeration: Logafix air separator also extracts any micro air bubbles that are present in the water

System: standard system.

Logafix installation systems.

  • extensive range of pipes and fittings in stainless steel, carbon steel and copper for small to large scale systems
  • safe and quick installation with color guiding system and pre-marked insertion depths
  • 5-year warranty on the complete Logafix range

System

Extension stage 1:
Fuel cell technology.

System: extension stage 1.

BLUEGEN BG‐15 fuel cell in the Titanium design

  • generating own power for greater independence
  • significant potential for saving on energy bills, as well as highly attractive subsidies (DE min. € 15,050)
  • trouble-free retrofitting and flexible integration into the heating system with Buderus system solutions

Efficient energy production.

  • Innovative SOFC fuel cell with 1.5 kWel/up to 0.85 kWth*
  • Highest efficiency with up to 57 % electrical efficiency
  • generates electrical energy from natural or bio natural gas around the clock – more than 13,000 kWh per year
  • produces additional heat that can be used flexibly in the heating system
  • security through a 10-year full maintenance contract
*At 30 °C return temperature and depending on electrical efficiency

Full overview of the BlueGEN-net app*.

  • convenient control via smartphone, tablet or PC
  • full control over and insight into all data – any time and anywhere
  • optimum overview of the electricity production level and CO2 savings
  • various setting options including individual profiles
  • adaptation of electrical output power from 0.5 to 1.5 kW at hours of the day or on days of the week

Sample view of energy cost savings.*

Result

  • Energy cost savings of € 2410 per year**
  • Amortisation after approx. seven years

Assumptions

  • 13,050 kWh of electricity produced is consumed in-house
  • 23,170 kWh gas consumption
  • Gas price of 5 ct/kWh (net)
  • Electricity price of 26 ct/kWh (net)
  • Including KfW 433 funding
* Assumption: Self-sufficiency = 83 % (self-sufficiency study), when the energy provided by the BLUEGEN BG-15 is used completely by the user, electricity price of 26 ct/kWh (increase/year = 4 %), gas price 5.0 ct/kWh (increase/year = 2 %); all figures are net amounts, average values over 10 years. Prices subject to change. No rights or claims arise from this sample calculation. Misprints and errors excepted (as of March 2020). Source: BlueGEN BG-15 calculation tool. As at: 18.02.2021 ** Average value.

System

Extension stage 2:
Air Flux VRF air conditioning system

System: extension stage 2.

Air Flux VRF air conditioning system

  • modular air conditioning system with versatile combination options for almost any air conditioning design
  • wide range of indoor and outdoor units with very high efficiency due to excellent SCOP and SEER values
  • convenient operation and remote monitoring and control via Bosch controller system, plus a range of gateways for BMS integration

System: extension stage 2.

Air Flux VRF air conditioning system

MDCI outdoor unit:

  • mini air conditioning unit for cooling and heating
  • ideal for small business applications due to output range of 8 to 45 kW
  • up to 15 indoor units can be connected to a system

System: extension stage 2.

Air Flux VRF air conditioning system

Wall mounted indoor unit AF-W:

  • appealing design
  • auto oscillation function for optimum airstream distribution
  • 7-stage fan for preventing drafts

System: extension stage 2.

Air Flux VRF air conditioning system

AF-4CC compact 4-way ceiling cassette:

  • 360° air discharge with oscillating function for optimum and even air distribution, plus 7-stage fan
  • suitable for installation in Euro grid ceilings
  • optional connection of a duct, for cooling or heating adjacent small rooms

System: extension stage 2.

Air Flux VRF air conditioning system

Individual and central controllers:

  • central controller ACC TM with touchscreen and LAN/WLAN connection for up to 64 indoor units (can be extended to 256)
  • hardwired individual controller ARC C, can be extended for up to 16 indoor units
  • room controller with infrared remote control ARC C IR

System: extension stage 2.

Air Flux VRF air conditioning system

System benefit:

The efficient VRF air conditioning system is individually controllable, ensuring a comfortable indoor climate – even in large rooms with different thermal loading zones.

System

Extension stage 3: System accessories.

System: extension stage 3.

System accessories.

Air curtain:

  • achieves significant energy savings by preventing heat loss caused by frequent opening of entrances
  • exclusion of drafts, dust and air pollution for a healthy indoor climate
  • straightforward installation with electrical and water connections from above

System: extension stage 3.

System accessories.

Trench convectors:

  • trench convectors for heating and cooling create a pleasant indoor climate throughout the year
  • exceptionally energy efficient due to optimized finned tube banks, ensuring best possible energy transfer
  • trench convectors harmoniously blend into any environment in form and color

System: extension stage 3.

System accessories.

Logatrend CV-Plan vertical radiator:

  • efficient, aesthetically pleasing, vertical – panel radiators in a tall and slender design with brilliant smooth finish
  • variable installation with 4 connections and additional center connection
  • wide range of versions – 4 models in 6 different installed heights and lengths

System: extension stage 3.

System accessories.

System benefit:

Compatible system accessories available for all applications. With everything from one source, the different components of the entire heating system are perfectly matched.

Networking

BlueGEN-net App*

  • convenient control via smartphone, tablet or PC
  • full control over and insight to all data - any time and anywhere
  • optimum overview of electricity production level and CO2 savings
  • various setting options including individual profiles
  • adaption of electrical output power from 0.5 to 1.5 kW at hours of day or on days of the week
* From SOLIDpower.

Networking

Air Flux central controller

  • central controller can be accessed via LAN/WiFi for convenient remote control and monitoring of the system
  • intuitive operation via touchscreen with dashboard and tiled view
  • includes floor plan manager and display of relevant system parameters
  • range of gateways as interface to a building management system

Service

Logasys systems and Logaplus packages

Customized system brochures to assist you during installation and commissioning.

Service.

Air Select engineering software.

  • freely available, internet-based software for configuring your VRF air conditioning system
  • alternatively, Buderus can provide a design suggestion based on specified loads
  • supply of assembly plan, all system parameters, as well as the parts list

Service

Fuel cell training.

  • one-day training seminars
  • complete information on functional principles, field of application and installation requirements
  • advice on funding conditions and feasibility studies

Service

VRF system training.

  • principles of designing VRF systems (detailed introduction to the product range)
  • project engineering with Air Select engineering software
  • hydraulic scheme design in 2 and 3-conduit systems

Service.

24/7 customer service.

  • assistance with commissioning, maintenance, repair, water analysis and efficiency
  • more than 300 service technicians are on call every day throughout Germany
  • over 220 service products: available throughout Germany; can be combined as required
Buderus

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