2a:null 2b:["$","title",null,{"children":"Shower timee! | Jonatan Hildén | Observable"}] 30:T8e1,{ const rec = 35 const total = showerDuration*showerFreq; const newTotal = showerDurationNew*showerFreqNew const fKsep = d3.format(',d') const repeatSymbol = (value, symbol='💧', unit=10)=> { let s ='' for (let index = 0; index < Math.round(value/unit); ++index) { s+=symbol } return s } const mark = (rec, target)=> { let marker if (rec==target){marker='🙂'} else if (targetrec){marker='👎'} return marker } const change = (v1, v2) =>{ const diff = (v1/v2).toFixed(1) let returnvalue = (diff<1.0 ? `${diff*100} % of the old time`: `${diff} times longer in the shower`) return returnvalue } return htl.html`

Possible shower duration recommendation:
5 minutes*, 7 times / week: total of ${rec} minutes

* Iltalehti: Suomalaisille jaetaan pian säästövinkkejä energiakriisin varalle – tällaisia neuvot voisivat olla

Time showering now / week: ${total} min ${mark(rec, total)}

Water used: ${fKsep(total*liters)} liters
${repeatSymbol(total*liters, '💧', 100)}
Energy used: ${(total*liters*kWhPerLiter).toFixed(1)} kWh
${repeatSymbol(total*liters*kWhPerLiter, '⚡️')}
Equal to ${(((total*liters*kWhPerLiter)/(kWhtotal/52))*100).toFixed(1)}% of weekly electricity use or driving ${((total*liters*kWhPerLiter)/0.20).toFixed(0)} km with an average electric car*.

New showering time / week: ${newTotal} min ${mark(rec, newTotal)}
${change(newTotal, total)}

Water used: ${fKsep(newTotal*liters)} liters
${repeatSymbol(newTotal*liters, '💧', 100)}
Water saved: ${fKsep(total*liters-newTotal*liters)} liters
Energy used: ${(newTotal*liters*kWhPerLiter).toFixed(1)} kWh
${repeatSymbol(newTotal*liters*kWhPerLiter, '⚡️')}
Equal to ${(((newTotal*liters*kWhPerLiter)/(kWhtotal/52))*100).toFixed(1)}% of weekly electricity use or driving ${((newTotal*liters*kWhPerLiter)/0.20).toFixed(0)} km with an average electric car*.
Energy saved: ${(total*liters*kWhPerLiter).toFixed(1)-(newTotal*liters*kWhPerLiter).toFixed(1)} kWh

` }31:[] 2e:{"id":"367161a0c5515b75","slug":"shower-timee","title":"Shower timee!","thumbnail":"84e3ac4f7048113525788114f69afb0d7ece114762f60999d977e917e142db18","access_level":"public","create_time":"$D2022-08-01T07:31:02.686Z","update_time":"$D2022-08-02T07:37:17.014Z","view_time":null,"first_public_time":"$D2022-08-02T06:59:38.952Z","fork":false,"stars":4,"starred":false,"owner":{"type":"team","id":"f68715fc404b4f1d","login":"hjhilden","name":"Jonatan Hildén","avatar_url":"https://avatars-next.observableusercontent.com/af457924bfd3035b839251d8734a533c11ea8f05b54e2e971e892a1fbaf10992","tier":"starter_2024"},"version":231,"publish_version":null,"role":null,"authored":false,"authors":[{"type":"individual","id":"19f39c9c4d9fb475","login":"hjhilden","name":"Jonatan Hildén","avatar_url":"https://avatars-next.observableusercontent.com/af457924bfd3035b839251d8734a533c11ea8f05b54e2e971e892a1fbaf10992","tier":null}],"members":[{"type":"individual","id":"19f39c9c4d9fb475","login":"hjhilden","name":"Jonatan Hildén","avatar_url":"https://avatars-next.observableusercontent.com/af457924bfd3035b839251d8734a533c11ea8f05b54e2e971e892a1fbaf10992","tier":null,"role":"editor"}],"comments":[],"custom_thumbnail":false,"trashed":false,"subscribed":null,"forks":1,"collection":null,"type":"notebook","body":{"title":"Shower timee!","cells":[{"id":0,"value":"# Shower timee!\n## Calculate the time spent showering and how that affects energy and water use. For fun and general interest. Of course, every little bit matters, but a far bigger question than showers or individual choices is industrial energy consumption, which [was 45% of the total in Finland 2021](https://www.motiva.fi/ratkaisut/energiankaytto_suomessa/energian_loppukaytto).","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined"},{"id":122,"value":"Background variables: typical showerhead flow and energy required to heat water, yearly household electricity use in Finland. Note that water use in itself isn’t a problem (in most places) in Finland, so one may take as many cold showers one likes.","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined"},{"id":105,"value":"viewof liters = Inputs.range([8, 20], {label: \"shower, liters of water per minute\", step: 1, value:12})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":114,"value":"viewof kWhPerLiter = Inputs.text({label: \"energy, kWh / liter *\", value:0.038})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":194,"value":"viewof kWhtotal = Inputs.text({label: \"Yearly household electricity use, kWh**\", value: 3000})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":119,"value":"\\*) approximate value for +38°C water, based on figures here: https://www.energiatehokaskoti.fi/suunnittelu/talotekniikan_suunnittelu/kayttovesi\n\\**) average for household of one person, apartment building (2011): https://www.motiva.fi/files/8300/Kotitalouksien_sahkonkaytto_2011_Tutkimusraportti.pdf","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined"},{"id":41,"value":"### Shower frequency and duration now: ${showerFreq*showerDuration} total minutes","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined"},{"id":8,"value":"viewof showerFreq = Inputs.range([1, 25], {label: \"Shower frequency, week\", step: 1, value:7})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":5,"value":"viewof showerDuration = Inputs.range([2, 30], {label: \"Shower duration, minutes\", step: 1, value: 15})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":43,"value":"### New shower frequency and duration: ${showerFreqNew*showerDurationNew} total minutes","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined"},{"id":36,"value":"viewof showerFreqNew = Inputs.range([1, 14], {label: \"Shower frequency, week\", step: 1, value:5})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":34,"value":"viewof showerDurationNew = Inputs.range([2, 30], {label: \"Shower duration, minutes\", step: 1, value: 5})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":13,"value":"$30","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":215,"value":"*) [0.2 kWh/km for average consumption of an electric car](https://www.virta.global/blog/ev-charging-101-how-much-electricity-does-an-electric-car-use) ","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined"}],"files":"$W31","stdlib":"1","titling":"auto"}} 2f:"$2e:body"

Possible shower duration recommendation:5 minutes*, 7 times / week: total of ${rec} minutes

Time showering now / week: ${total} min ${mark(rec, total)}

New showering time / week: ${newTotal} min ${mark(rec, newTotal)} ${change(newTotal, total)}

Possible shower duration recommendation:
5 minutes*, 7 times / week: total of ${rec} minutes

New showering time / week: ${newTotal} min ${mark(rec, newTotal)}
${change(newTotal, total)}