Do any crowdfunding platforms allow partial refunds if a project does not reach completion?

For example, if a project:

• Sets a 1 year deadline

• Raises more than its goal of 80,000 EURO

• Spends over 47,000

• The deadline passes

Do any sites allow a mass partial refund of 33,000 split among donors based on their contribution amount? If not automatic, do any sites allow a manual partial refund?