Search Results - "Claesson, Johan"

Explicit Multipole Formula for the Local Thermal Resistance in an Energy Pile—The Line-Source Approximation by Claesson, Johan, Javed, Saqib

“…This paper presents a closed-form quite handy formula for the local thermal resistance Rb between the temperature of the bulk heat-carrier fluid in the pipes,…”
Get full text

Explicit Multipole Formulas for Calculating Thermal Resistance of Single U-Tube Ground Heat Exchangers by Claesson, Johan, Javed, Saqib

“…Borehole thermal resistance is both an important design parameter and a key performance characteristic of a ground heat exchanger. Another quantity that is…”
Get full text

Steering Parameters for Rock Grouting by Gustafson, Gunnar, Fransson, Åsa, Claesson, Johan

“…In Swedish tunnel grouting practice normally a fan of boreholes is drilled ahead of the tunnel front where cement grout is injected in order to create a low…”
Get full text

Benefits of Investigating the Thermal Component for Moisture Safety in Ventilated Attics by Claesson, Johan, Wallentén, Petter

“…Cold ventilated attics often have mould problems in Sweden. This is valid both for old and sometimes newly built attics. Increased insulation on the attic…”
Get full text

How to develop fifth-generation district heating and cooling in Sweden? Application review and best practices proposed by middle agents by Abugabbara, Marwan, Gehlin, Signhild, Lindhe, Jonas, Axell, Monica, Holm, Daniel, Johansson, Hans, Larsson, Martin, Mattsson, Annika, Näslund, Ulf, Puttige, Anjan Rao, Berglöf, Klas, Claesson, Johan, Hofmeister, Morten, Janson, Ulla, Jensen, Aksel Wedel Bang, Termén, Jens, Javed, Saqib

“…Sweden has an ambitious plan to fully decarbonise district heating by 2030 and to contribute with negative emissions of greenhouse gases in 2050. The vagaries…”
Get full text

Explicit multipole formulas and thermal network models for calculating thermal resistances of double U-pipe borehole heat exchangers by Claesson, Johan, Javed, Saqib

“…Double U-pipe boreholes are the second most used type of ground heat exchangers after single U-pipe boreholes. The borehole thermal resistance is a key design…”
Get full text

Comparative study and validation of a new analytical method for hydraulic modelling of bidirectional low temperature networks by Abugabbara, Marwan, Lindhe, Jonas, Javed, Saqib, Johansson, Dennis, Claesson, Johan

“…Bidirectional Low Temperature Networks (BLTNs) are an innovative technology of district heating and cooling systems. Because of their intrinsic feature of…”
Get full text

A new analytical method for modeling network hydraulics in district systems with bidirectional mass and energy flows by Claesson, Johan, Lindhe, Jonas, Abugabbara, Marwan, Johansson, Dennis, Javed, Saqib

“…Recent technologies of district heating and cooling (DHC) systems integrate renewable energy sources and connect multiple heat producers and consumers to the…”
Get full text

A fast approximate method for simulating thermal pile heat exchangers by Loveridge, Fleur, Woodman, Nicholas, Javed, Saqib, Claesson, Johan

“…Ground source heat pump systems, operating in conjunction with vertical ground heat exchangers, will play a key role in decarbonising heating and cooling of…”
Get full text

Explicit multipole formulas and thermal network models for calculating thermal resistances of double U-pipe borehole heat exchangers by Claesson, Johan, Javed, Saqib

“…Double U-pipe boreholes are the second most used type of ground heat exchangers after single U-pipe boreholes. The borehole thermal resistance is a key design…”
Get full text

Unexpected experimental results for capillary suction in wood: Analysis on the fibre level by Segerholm, Ingemar, Claesson, Johan

“…A series of simple experiments on capillary water uptake in rectangular sticks of Scots Pine (Pinus sylvestris L.) gave some unexpected results. Sticks of…”
Get full text

Multipole method to calculate borehole thermal resistances in a borehole heat exchanger by Claesson, Johan, Hellström, Göran

“…Ground-source heat pump systems use borehole heat exchangers to transfer heat to and from the ground. An important feature is the local thermal resistances…”
Get full text

Use of an analytical solution for calculating temperatures in repository host rock by Hökmark, Harald, Claesson, Johan

“…In many concepts considered for deep geological disposal of nuclear High Level Waste, a bentonite clay buffer will be used as a protecting and isolating…”
Get full text

A Transient Pressurization Method for Measurements of Airtightness by Mattsson, Björn, Claesson, Johan

“…By measuring the pressure decline in a pressurized air volume from which air is leaking it is possible to determine the air leakage rate as a function of the…”
Get full text

Isothermal moisture flow in building materials by Arfvidsson, Jesper, Claesson, Johan

Get full text

Isothermal moisture flow in building materials:: modelling, measurements and calculations based on Kirchhoff’s potential by Arfvidsson, Jesper, Claesson, Johan

“…The modelling of non-linear, isothermal moisture flow in porous media without hysteresis is considered. Different formulations based on different potentials…”
Get full text

Thermoelastic stress due to a rectangular heat source in a semi-infinite medium. Presentation of an analytical solution by Claesson, Johan, Probert, Thomas

“…The thermoelastic response due to a time-dependent rectangular heat source in a semi-infinite medium is analyzed. The problem originates from studies of…”
Get full text

On the use of the diffusion equation in test case 6 of DECOVALEX by Claesson, J., Follin, S., Hellström, G., Wallin, N.-O.

Get full text