This project has received funding from the European Union’s Horizon 2020 Research and Innovation program under Grant Agreement n° 680738

AHT Feasibility Assessment Tool
Report

SPIRE

Developed by:

Aiguasol TU Berlin Tecnalia Circe

Indus3Es – AHT Feasibility Assessment Tool Report

Disclaimer

This report (“Report”) is prepared and issued by the Indus3Es tool developers for the user named on the cover page (the “User”).

The results generated by the Indus3Es tool provide a first indication on the possibilities to implement an absorption heat transformer at the User’s industrial process, however actual numbers may be different. This tool has been compiled with the greatest possible care, but no rights may be derived from its content. The Indus3Es tool developers shall have no liability to third parties in connection with this Report or for any use whatsoever by third parties of this Report.

Introduction

Energy-Intensive Indus3Es need to reduce their primary energy consumption in order to increase their effectiveness. This would lead to an increase in their competitiveness and a reduction of their product’s embedded energy and carbon footprint. Absorption Heat Transformers (AHT) are designed to recover and revalorize industrial waste heat below 130°C. AHT revalorizes almost 50% of recovered waste heat, boosting the temperature and becoming usable in the industrial process again.

The aim of this report is to analyse the feasibility to implement the Indus3Es AHT technology in your industrial process. Based on the entered characteristics of your waste heat streams, the tool has calculated the operation and implementation costs of AHTs in your processes, as well as the resulting savings and associated return of investment.

This project has received funding from the European Union’s Horizon 2020 Research and Innovation program under Grant Agreement n° 680738

Indus3Es – AHT Feasibility Assessment Tool Report

User Defined AHT Process

This section presents the parameters of the industrial process and associated waste stream defined by the User.

  • Waste Heat Source
  • Temperature:
  • Available heat:
  • Flow rate:
  • Fluid:
  • Cooling Source
  • Availability of cooling tower: XX
  • Temperature: XX °C
  • Power consumption: XX kWel/kWcooling
  • Process Heat
  • Temperature out: XX °C
  • Process Operation
  • ATEX required: XX °C
  • Running hours: XX hours/year
  • Simultaneity: XX %
  • Current Heat Source
  • Heat source: XX
  • Efficiency heat generation: XX %
  • Location
  • Country: XX
  • Electricity costs: XX €/kWh
  • Fuel costs: XX €/kWh
  • Electricity CO2 factor: XX kgCO2/kWh
  • Fuel CO2 factor: XX kgCO2/kWh
  • Electricity primary energy factor: XX kWhpel/kWhfe
  • Fuel primary energy factor: XX kWhpel/kWhfe
This project has received funding from the European Union’s Horizon 2020 Research and Innovation program under Grant Agreement n° 680738

Indus3Es – AHT Feasibility Assessment Tool Report

Results

This section presents the results of the AHT feasibility assessment, including the main design parameters of the AHT, costs and savings, investment costs and financial results.

  • AHT Main Design Parameters
  • Heat delivered:
  • Electrical consumption:
  • COPth:
  • COPel:
Circuit machine
  • Energy Results
  • Reduction of fuel consumption:
  • Extra electricity consumption:
  • Primary energy savings:
  • CO2 savings:
  • Investment Costs
  • Absorption heat transformer:
  • Cooling tower:
  • Other costs (*):
  • Total:
  • Financial Results (**)
  • Fuel savings:
  • Electricity costs:
  • Total financial savings:
  • Maintenance costs (***):
  • Payback period:
  • IRR:
  • NPV:

(*) These include EPC costs associated with required works and equipment to integrate the AHT in the industrial process. These costs have been estimated to be 40% of the total cost of the AHT.

(**) A 2% inflation rate has been considered to calculate the AHT’s financial indicators over a project lifetime of 20 years

(***) Maintenance costs have been estimated as a 2% of the total investment costs.

This project has received funding from the European Union’s Horizon 2020 Research and Innovation program under Grant Agreement n° 680738

Indus3Es – AHT Feasibility Assessment Tool Report

Sensitivity of AHT’s financial feasibility to operational temperature

It is interesting that the user understands the effects that the outlet temperature has on the financial feasibility of the AHT implementation to their industrial process. As such, the following table presents the heat delivered, fuel savings, payback period, IRR and NPV correspondent to the set AHT outlet temperature and for three additional temperatures closed to the value set by the user (set outlet temperature -5, -10 and -15 °C).

  • Temperature
    out(°C)     Heat
    delivered
    (kW)     Total financial
    savings
    (€/year)     Total investment cost
    (€)     Fuel
    savings
    (€/year)     Payback
    period
    (years)     IRR
    (%)     NPV
    (€)
*NEF: Not economically feasible
This project has received funding from the European Union’s Horizon 2020 Research and Innovation program under Grant Agreement n° 680738

Step 1

The available heat is calculated from waste heat stream conditions: temperature and flow rate or heat capacity. You have the option to choose between two different fluid options.

Step 2

The objective of the AHT is to recover a waste heat source and upgrade its temperature, so that this can become reusable again in an industrial process. The operating temperature of this process is therefore required.

On one hand, it is required to define the number of operation hours of the process where the waste heat is obtained. As the number of operation hours of this process increases, so does the energy that can be revalorized, and this yields to better technical and economic feasibility results. In addition, it is necessary to define the simultaneity between available waste heat and process heat where revalorized stream would be reused, being the 100% the best scenario.

Step 3

Data of your current heat supply is needed to determine the energy savings associated to the implementation of AHTs in your process. Different options are suggested. The overall efficiency of your current heat supply source is also required. In case you are not sure, an efficiency is suggested for each type of heat source.

Step 4

Costs of electricity and fuel as well as CO2 factor are suggested for a number of countries. Alternatively, you can enter manually these costs and factors.

Step 5

Step 6

It is interesting that the user understands the effects that the outlet temperature has on the financial feasibility of the AHT implementation to their industrial process. Thus, the figure below provides the resulting payback and COPth for the set AHT outlet temperature and for three additional temperatures closed to the value set by the user (set outlet temperature -5, -10 and -15 °C).

Circuit machine Circuit machine Circuit machine Circuit machine

*When no country data is available the EU28 average value is given

Waste heat source

Please fill in the requested information about the heat source:

ºC i
kW i
m3/h i
i

Cooling source

Please fill in the requested information about the cooling source:

ºC i
kWel / kWcooling i

Heat to process

Please fill in the requested information about the heat to process:

ºC i

What are the running hours of the process?

hours / year i
% i

ATEX directive

Current heat source

Please fill in the requested information about the current heat source:

i
% i

Select your location

i

Which are the energy prices, the CO2 emissions and primary energy conversion factors?

Euro / kWh i
Euro / kWh i
kgCO2 / kWh i
kgCO2 / kWh i
kWhpe / kWhfe i
kWhpe / kWhfe i

Great! You have filled all the necessary data!

Push the button to analize the performance of the heat pump under your working conditions and to determine the economic feasibility of the heat pump for your process.

Change inputs

Summary of results

ABSORPTION HEAT TRANSFORMER

  • Electrical consumption 200 kW
  • Heat to process 1000 kW
  • COPth 0.5
  • COPel 10

ECONOMIC RESULTS

  • Reduction of fuel consumption 120000 kWh per year
  • Extra electricity consumption 50000 kWh per year
  • Fuel savings 200000 € per year
  • CO2 savings 2000 Kg per year
  • Electricity costs 45000 € per year
  • Total financial savings 155000 € per year
  • Total investment costs 200000 €
  • Payback period 1.3 years
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