All Postings (99)

2018

Learning to pentest!

Physicist, walking down the stack

The First Search Result

Reverse Engineering

2017

Best of 2017

Working Remotely

Computer Science and IT

Taking stock! Physics

Subversive? Physics?

My Philosophy!

Scripts Beget Scripts

2016

Theoretical Physics. A Hobby.

Self-Referential Poetry

Silent Online Writing

'Are You Still Doing PKI?'

My Philosophy (?)

Impact of physics on my life

Not much happened in 2015

2015

Unspeakable

Self-Poetry

Farewell Posting ...

Hacking away...

Web Project - Status

We Interrupt ...

Poetry from Poetry

PKI-Status-Update

Life and Work

Definition: 'Subversive'

2014 in Books

Physics Postings

Engineering Postings

True Expert

2014

2014 - a Good Year

Physics or Engineering?

Engineering Links

What Is Art?

Bio

PKI FAQ

Google's Poetic Talents

Certificates and Heat Pumps

Nr. 5: A Mind-Altering Experience

Technet postings

WOP!

Pink Spaceship

radices = Roots!

IT Postings

Web Projects

Life, the Universe, and Everything

Uh-oh, No Posting in March

PKI Resources

PKI Issues

Subversive Work

Spam Poetry

A Career 'in Science'

Writing

On the Shoulders of Subversive Giants

Search Term Poetry

Facebook Art

2013 in Books

2013

Explain, Evaluate, Utilize

Technology

About Life-Form Elke Stangl

elkement and This Site

No. 3: Internet Apocalypso

Retrospection

Newsletter Resurrection

2012

For Free

Subversive Yearly Report

Is My Life a Cliché?

Indulging in Cliché

Torture Turning Trivia

Intermittent Netizen

Knowledge Worker...

Profile

Physics on the Fringe

Graduation Speech

The Element is Back!

Offline

Physics Links

2011

Not Funny

Calendar and Magic

Expert

In Need of a Deflector

About to Change

A Nerd's Awakening

For the Sake of Knowledge

2008

Profession Or True Calling?

No. 2: On Self-Reference

I Have No Clue About Art

Netizen

2007

The End

No. 1: On Subversion at Large

2005

Emergency Exit

Modern Networker

2004

The Scary Part

Exploring the Work Space

2003

Instead of a CV

Favorite Books

2002

Elke was here

Postings tagged with 'Heat Pump', listed in descending order by creation date. All Postings shown.

Best of 2017

(elkement. Last changed: 2017-12-14. Created: 2017-12-10. Tags: Life, Looking Back, Garden, Heat Pump, Introspection, Learning, Philosophy, Simulations, Thermodynamics, Work. German Version.)

I did not have ambitions 2017. It should have been a year of taking stock - and it was, in a good way.

  • I time-travelled and re-lived some history of software engineering, and finally learned basics of computer science. This was philosophical delight, but also useful and necessary: I was able to boost the performance of my simulations (above a level of what was, maybe, embarrassingly slow).
  • I tinkered a lot with numerical simulations of our heat pump system. Main thing I learned: The more modern the building, the more you'd need to simulate humans' behavior, rather than physics or control logic.
  • Reverse engineering and troubleshooting is what finally connects all the fields of science and engineering I love: Troubleshooting, ferreting out hidden causes and effects in hydraulics feel the same as sniffing and debugging software and networking protocols.
  • Theoretical physics reading: I returned to classical thermodynamics and statistical mechanics; I find it fascinating and beautiful in its own right, even if only at the pre-1960s level. I took stock of my writing on heat transport - and I am happy I can actually really use physics on a daily basis, in down-to-earth engineering projects.
  • I was thinking about automation, standardization, and big social media platforms. I struggled with this blog post about the future of small business for a long time, but optimism won. I might frame this even more positively today: There is a place for artisanal service delivery despite or because of Everything Being Offered As A Service by Omniscient Data Krakens.
  • My blog turned 5 in spring, and I allowed myself to return to a more philosophical blogging style (briefly). Otherwise, I finally and subconsciously made the elkement.blog my main resources of technical content - or at least content related to my professional domain, and content edited for clarity and entertainment. Whereas on elkement.subversiv.at I let my stream of consciousness flow. It seems that the pattern that finally emerges is: elkement.blog = elkement's tech / science magazine and platform for personal research news, with an ever growing focus on fields I have training in and daily practical exposure to. elkement.subversiv.at gravitates against the same focus, but I allow myself to focus on my personal perspective only. So here you find 'what I am doing with [insert: heat pumps, security,...]', over there you find the useful content as such.
  • Tomato harvest was great. I tried to grow late varieties - like Ox Heart - directly outside, and it worked.
  • Dinosaur Kale tastes good. And it is able to recover from a at attack of a bug that targets kale (and radishes' seed capsules). Don't try to keep seeds of radishes in the land of canola.

This website is an old-school non-interactive site. My blog technically isn't, but looks like one now, for the lack of visible comments. However, messages have reached over covert 1:1 channels, so I do now that there is a small but sincerely interested group of readers. I thank you all for reading my stuff!

Cheers!

elkement (Elke Stangl) 2017

Working Remotely

(elkement. Created: 2017-12-02. Tags: Culture, Engineering, Heat Pump, Internet, Technology, Work. German Version.)

Many years ago, The Web – which has its own category on my website here – was an experimental playground for me. You might have guessed so, just checking out the URL of this post.

Technologies and protocols once used for displaying static websites have been repurposed, and HTTP(s) became the so-called Universal Firewall Bypass protocol. We synchronize files with Dropbox or offline-cache or mailboxes. Applications like Teamviewer or the signals from our Things (as in Internet Of Things) poke controlled holes into our firewalls so that they are somewhat accessible from the outside.

I have written about all of that at length elsewhere – about the insecurity of the Internet of Things and about Data Krakens dominating small businesses. I have had mixed feelings about the evolution of The Web. But there is one absolutely positive outcome: That HTTP(s) (mis-)use connection magic enables me to work in a way I would have never envisaged 25 years ago – at the time when my most important ‘files’ were still contained in physical folders.

I am able to work nearly remote-only, not only in IT projects. About 10 years ago I was a consultant in information security. We worked from ‘home office’, too, although company culture often dictated that there had to be meetings in real life. Today, I still support some long-term IT security clients, but mainly via remote and/or asynchronous channels. When we started our experimental heat pump side-business several years ago, my standard joke was: Someday we will work in heat pump projects the way we work in IT projects. And the joke became true – it actually became the default way of working, even for clients that are within geographical reach, like a 50-70km drive away.

This list on our website explains the steps / stages of such a project – but it’s hard to convey the spirit of a remote project properly. It sounds way too serious. On our German blog we feature verbatim hilarious quotes of a client / ice storage heat pump system self-builder – translation could never do it justice.

Working remotely seems to be about technology: We need to have the tools we have today to communicate, exchange information, to monitor and manage systems over the internet. But it is more about culture. In IT, such tools have already been available for a long time, yet some corporations insisted on ‘face showing rituals’. Notably, during the economic crisis of 2008/2009 many companies worked hard to keep travel costs low and resorted to working remotely – and later never reverted to face showing mode.

Successful remote communication is based on the skill of asynchronous communications, e.g. on processing more than the first three lines of an e-mail, but replying thoughtfully in nested threads. My anecdotal evidence tells me that our typical heat pump clients have that skill – tech-savvy geeks whose day jobs are usually tech- / IT- / engineering-related .

You need to keep politics out. As soon as that infamous ‘non-verbal clues’ become important, remote channels might be too narrow. However, I wonder if politics can ever be tamed properly even with heavy face showing. My pragmatic solution is to focus on simple ‘structures of command’ – work with one single accountable client who is in charge for his/her project and has skin in the game. Only if you need to intermediate between ‘team members’ and listen to ‘different sides’ you get into troubles. I have my share of experiences – like: Clandestine meetings in which project member X told me they considered to revolut against project manager Y – depending on my honest opinion of Y.

Many hands-on engineering tasks are gradually being supported by remote IT tools. I am not a first adopter of such technology – like augmented reality glasses for engineers in power plants. My icon is an angry dinosaur for a reason. But even I say, half-jokingly, that someday people might 3D print our heat exchanger tubes and PVC supporting constructions, instead of working with our traditional design documents and plans.

So at the end of 2017, I embrace The Web again and my outlook is positive. It’s like returning to the old days – when The Cluetrain Manifesto told us that The Internet will kill TV-like ads and foster communications between human beings – also in business. That may sound irrational, given the ominous power of online tracking, all for the sake of advertizing. But anyway: The positive spirit of remote working pioneers, like Automattic (wordpress.com) is what defines The Web for me!

Heat Pump System and Renewable Energy

(elkement. Last changed: 2015-11-07. Created: 2015-02-04. Tags: Postings, Blogging, Resources, Links, Engineering, Heat Pump. German Version.)

I blog about anything heat-pump-related, in particular about our system. In addition, I am interested in thermodynamics, heat pumps and heating systems in general - and their integration with the smart grid and related security concerns. These are my postings about our 'ice-storage-/solar-' powered system specifically and postings on closely related subjects like the power grid, renewable energy and sustainable living.

Hydraulic schema of our system

Physics, Science, Engineering, and a Lot of Fun

(elkement. Last changed: 2015-02-04. Created: 2014-12-17. Tags: Physics, Engineering, Science, Heat Pump, Simulations, Career, Life, Work. German Version.)

I am running a small engineering consultancy together with my husband. Following Star Trek terminology, he is Chief Engineer, and I am Science Officer.

In overly correct legalese, my job titles according to our business licences are 1) Consulting Engineer in Applied Physics and 2) IT Consultant.

We specialize in planning of heat pump systems with unconventional heat sources, that is a combination of an underground water tank and an unglazed solar collector. 'IT' means: playing with control units and data monitorin.

Solar collector for harvesting energy from ambient air.

As we run a German blog focused on this system and I also devote a 'sub-division' of my English blog to it, I use this site (radices.net) mainly for consolidating resources and links - in the same way as I curate security / PKI related links. Perhaps these link dumps will not be very useful for anybody but myself.

I once was a laser physicist and a materials scientists - my specialties having been high-temperature superconductors, laser-materials processing with Excimer lasers, and the microstructure of stainless steel. Then I turned to IT security, IT infrastructure and IT management for more than 10 years.

In 2012 I felt the urge to reconnect with my roots as a scientist and engineer, and we started working on our own heat pump research project in stealth mode. It turned to a second 'branch' of our two-person business. There are connections between my different fields of expertise - IT security and heat pumps - like: the security of the smart grid, 'hacking critical infrastructure', monitoring and control systems. Even the data we gather with our pilot setup have turned into 'big data' that require analysis and management.

So I am actually more of an engineer than a physicist. But I am still very interested in theoretical physics as sort of a mental exercise, and I indulge in reading textbooks as hobby. In 2013 I had focussed on (re-) learning quantum field theory.

Since 2014 I am mainly blogging on down-to-earth classical mechanics or thermodynamics, and I enjoy doing cross-checks and back-of-the-envelope calculations on my blog.

Simplified simulation of ice in the water tank in different years.

Last change: Updated dead link to Austrian statistics on fuels and heating systems.

Heat pumps

Heat pump usage in different countries and history of heat pumps

Unusual heat sources

Sizing heat pumps - I am trying to learn the terminology of standards commonly applied in English-speaking countries:

Power grid and availability

Power generation

Hydro power plants

In Sweden the world's largest pumped hydro storage plant might be built:

  • See bottom of page 30 of this research paper:
    Besides the official estimations there are some discussions [28b] about building pumping capacity between the lakes Vänern and Vättern in Southern Sweden. The difference in altitude is 44 meters between these lakes.?
  • ... and the last page of this presentation:
    Possible future? Mariestads Kraftverks AB & others 50 km tunnel between the lakes Vänern & Vättern Cost: 250 billion SEK. Installed capacity: 50000 MW .

Free long-term weather data

Inputdaten für eigene Simulationen.

Germany and Austria.

World

  • Climate data for the last decades. The navigation is something you need to get used to (Pick: Cities, Climate, Climate Robot...). Therefore I start with Ice Days for Vienna. It is a bit weird that available data seem to depend on the choice of the language (less data for Vienna in English).

Extreme Weather

The winter 1962/63 was the coldest since 250 years in Europe (German article: Winter 1962/63 in Europa. Englisch article: Winter of 1962–63 in the United Kingdom).
More data from a talk / slides avaiable at the website of the Royal Meteorological Society: The bitter winter of 1962/63 - this winter was unusually mild in Canada and Greenland (p.17)

Could such a winter ever happen again? "The 1963 winter is well within the population of other cold winters that have been experienced in this country ... It is not necessary therefore to seek some very special cause in order to explain it." – H.C. Shellard , Meteorological Magazine , 1968  (p.21 of PDF)

Different heating systems

Statistics for Austria: Heating 2003 to 2012 by fuels used and heating system (in Austria). Less than 15% of (primary) heating systems are stoves, and they have been on a decline in the last decade.

Units, heat values, energy costs

Tools for converting units

Heat values

Properties of water (for comparing the energy stored in a water / ice tank)

Costs of energy - international

Monitoring, Control, IT

Metering and monitoring electrical power consumption

  • Smart meters with data loggers and/or various interface for attaching loggers - to be installed behind the official smart meter:
  • Parsing an online monitoring website is perhaps the most universal 'real-time protocol' in case not other interfaces are available. E.g. by using Powershell, I tested with the local website of a Fronius Symo inverter and their web portal www.solarweb.com. One option: Start an InternetExplorer.Application comobject and identify the html containing the interesting value per its ID (getElementById).

Manuals of data loggers by Technische Alternative Gmbh (for control units UVR1611, UVR16x2)

CAN Bus

  • Bus topology. Note that UVR1611 is automatically terminated by default.

Heating with computers

Computers installed in private homes provide their computing power to cloud services - while heating those homes.

Basics (Physics) - Mechanics, Electrodynamics

The Feynman Lectures of Physics

  • Volume 1: Mainly mechanics, radiation and heat.
  • Volume 2: Mainly electromagnetism and matter

Unglazed solar collector - part of the heat source of our heat pump system

... an odd combination probably.

But I have a penchant for combining anything. For me IT security, physics, and engineering are all connected naturally, and not only through my biography.

The communication between devices making up the internet of things need to be secured. Publicy Key Infrastructures may provide X.509 certificates needed to do this.

Physics provides one the one hand the underpinning of engineering, on the other hand mathematical methods used in physics can be applied to all kinds of complex systems. There is some truth to this satirical explanation of the relation between Feynman diagrams, certificate validation, and hydraulic designs..

But philosophical musings aside, on a daily basis I simply like to play with technology: Exploring how applications and systems use digital certificates and how they can or can't be 'hacked'. How to build ('hack') a technical solution using off-the-shelf components? How to develop a simulations tool from so-called simple 'Office software'?

Personal website of Elke Stangl, Zagersdorf, Austria, c/o punktwissen.
elkement [at] subversiv [dot] at. Contact