Blog

New paper on geothermal energy published

Our latest paper introduces a tabulated tool that aids in the early design of geothermal systems, by providing estimates of the system’s efficiency according to the chosen energy piles field configuration and heat pump sizing.

Direct link: https://doi.org/10.1016/j.enbuild.2020.110178

The paper can be downloaded FOR FREE for 50 days at this link:
https://www.sciencedirect.com/science/article/pii/S037877882031152X?dgcid=author

Abstract

Geothermal systems are often employed for both the heating and cooling of sustainable constructions. Energy piles (U-shaped heat exchangers inserted into the foundation piles) are widely included in these installations, whose performance is usually estimated by means of complex, time-consuming simulations already at an early design stage.
Here we propose a simple methodology, where a hand calculation tool provides the condenser yield per pile meter, ground area yield and demand covered by the heat pump by specifying only building heat load and geometric characteristics of the energy piles field. Our tool is tested by assuming 20 years of operation in a hall-type commercial building in a cold climate. A validated IDA-ICE parametric study couples the heat pump evaporator operation with heat transfer processes between energy piles and soil. Various system configurations are considered and thermal storage in the soil is included.
We find that the expected yield is not directly proportional to pile separation, while a smaller extraction power is favoured. Thermal storage in the soil is also confirmed to be critical. Besides our specific quantitative results, our practical guideline is qualitatively general and can be extended to any given building type and climate.

Full cover album released with Echoes From A Great Distance

So here is Echoes From A Great Distance (where I play bass) covering the magnificent One Hundred Years by The Cure.
https://soundcloud.com/echoesfro…/one-hundred-years-the-cure .
We have just released a full cover album, featuring Bauhaus, Midnight Oil, The Mission, Pere Ubu, Diaframma and Franti. Check it out on the band’s Soundcloud!

New lyrics video – Sabbatical Leave

I have published a lyrics video for the radio edit version of my song Sabbatical Leave. You can watch it below or on Youtube at https://www.youtube.com/watch?v=z1mfO0uZ7co

The full version of the track is on my Soundcloud profile at https://soundcloud.com/quantumprana/sabbatical-leave

New paper published: “A novel method for calculating heat emitter and controller configuration setpoint variations with EN15316-2”.

We published a new article! Highlights of the paper, available at https://doi.org/10.1016/j.jobe.2020.101387:

  • A novel method for the accurate calculation of total setpoint variations.
  • Effects of real system losses are better represented than with component assessment
  • Simulations of annual energy consumption compare losses for new and old building.
  • A common platform to compare emission efficiency under standardised conditions.

Abstract:
Estimating heat emission losses of heating systems is an important task of energy efficiency assessments in buildings. However, the present international standards do not specify how emission losses should be calculated or measured for different emitter and control system configurations. Aiming to fill this gap, here we propose a method for computing the temperature setpoint variations by addressing the heat distribution throughout a room with space heat emitters. This general and exact procedure enables the calculation of product category-specific setpoint variations for different types of heat emitters, accounting for the overall heat balance in the enclosure and including the cross-correlations of each component. Our method complements the procedure presented in the Standard EN15316-2, making it possible to compute emission losses as product-specific values of setpoint variations instead of tabulated values. As the main finding of the study, the calculation process is defined for a European Reference Room that allows an accurate and transparent evaluation of total setpoint variations. These are computed for specific products from measured vertical stratification and control parameters, by means of an annual IDA ICE simulation model of the reference enclosure. Applying the method to an annual energy performance simulation for an old and a new building in Strasbourg shows that emission losses are compensated by a total setpoint variation of respectively up to 2.00 °C and 1.20 °C, corresponding to an increase in total heating energy usage of up to 22% and 20%.

Special Issue “Energy Performance and Indoor Climate Analysis in Buildings” available for free download

Our Special Issue with MDPI titled “Energy Performance and Indoor Climate Analysis in Buildings” (18 papers) is available for free download here: https://www.mdpi.com/books/pdfview/book/1828
#Engineering #energy #Sustainability #Science #civilengineering

Special Issue “Energy and Technical Building Systems – Scientific and Technological Advances” now published

Our special issue with @MDPIOpenAccess “Energy and Technical Building Systems – Scientific and Technological Advances” (10 papers published) is now fully and freely available in pdf at https://www.mdpi.com/journal/energies/special_issues/energy_and_built_environment #Engineering #energy #energyefficiency #Sustainability #HVAC

“Sabbatical Leave” – a new track

“Sabbatical Leave” is the first tale of “The Adventures of Prof. Gideon Longbottom”. The evil researcher hates the world, and particularly his students with their smartphones always at hand. He therefore takes a Sabbatical leave to close himself into a laboratory in the cellar, for designing a weapon of mass destruction…with some (dark) humour.

Quantum Prana: vocals, lyrics, guitar, bass, programmed drums, production.
https://soundcloud.com/quantumprana/sabbatical-leave

————————————-
SABBATICAL LEAVE

Walking down the hall, the comedy plays
Students mocking me, “The hatchback will pay”
The rector won’t pay me regards
The faculty has only retards
Walking stick is carrying
My twisted proportions

My forehead is spacious
To accommodate grandeur
Massive head, naughty grin
My asymmetric chin
Showing the wasteland of my hatred for you

BURN! THEM ALL!
Petty dreams end in screams
Fire, your sins
BURN! THEM ALL!
The final resolution
Apocalypse of melted skin

Students check their smartphone
For quantum optics attention is gone
Spoiling little brats, technology
Life upon a display, making them restless

Your ignorance, your blessing
The final resolution

I’m taking my leave
Working in silence
In the cellar
Holding your smartphone
My grin on their display

BURN! THEM ALL!
Makeup and soaring screams
Flaming phones melt your skin
BURN! THEM ALL!
The final resolution
I’m gonna be a superstar!

(My) walking stick in flames
But I won’t care at all
Dancing on your graves
My twisted figure at the shopping mall

Delirium of the senses
The women will be mine
I shall just collect the pieces
Legs oh, will be carbonised
But after all, it will be fair!

Stepping down the stairs, cursing them all
You wonder why my laughing erupts
“That evil man has gone nuts!”

The dawn of my revenge
Sabbatical call

BURN! THEM ALL!
BURN! THEM ALL!
Revenge is nigh!

Are you searching for some new inspiration? Listen to “It’s all Suggestion”

We Echoes From A Great Distance are a psychedelic post-rock power trio, influenced by Joy Division, The Cure (mostly the “Pornography” era), Pink Floyd, Rush etc. Today we released “It’s all Suggestion”, a concept album against ignorance and hatred.
Are you searching for some new inspiration? Don’t listen to bullshit corporate music, listen to “It’s all Suggestion”…very loud!
https://soundcloud.com/echoesfromagreatdistance/prophets-and-clowns